subject:(Nanolayered coatings nanocomposite coatings microstructure mechanical properties crack resistance adhesion tribological behavior)

1. Miletić Aleksandar. Razvoj nanoslojnih i nanokompozitnih metal-nitridnih prevlaka.

Degree: 2015, University of Novi Sad

URL: https://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija144767409154785.pdf?controlNumber=(BISIS)95438&fileName=144767409154785.pdf&id=4626&source=OATD&language=en ; https://www.cris.uns.ac.rs/record.jsf?recordId=95438&source=OATD&language=en

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Razvijene su TiAlN/TiSiN i CrAlN/TiSiN nanoslojne prevlake u kojima je napravljen spoj nanoslojnog i nanokompozitnog dizajna. Akcenat je stavljen na proizvodnju prevlaka visoke tvrdoće… (more)

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Razvijene su TiAlN/TiSiN i CrAlN/TiSiN nanoslojne prevlake u kojima je napravljen spoj nanoslojnog i nanokompozitnog dizajna. Akcenat je stavljen na proizvodnju prevlaka visoke tvrdoće i visoke otpornosti na lom. Proučavane su i jednoslojne TiAlN, nanokompozitne TiSiN i višeslojne TiAlN/TiSiN prevlake kako bi se utvrdilo kako dizajn utiče na osobine prevlaka. Sve prevlake pripremane su sa jednim, dva i tri stepena rotacije. Pokazano je da dizajn i vid rotacije značajno utiču na mikrostrukturu i teksturu prevlaka, a time na njihove mehaničke osobine, otpornost na lom, adheziju između prevlake i podloge, topografiju površine i tribološko ponašanje. Nanoslojne i nanokompozitne prevlake odlikuju se kompaktnom nanokristalnom mikrostrukturom, dok jednoslojne TiAlN prevlake imaju stubastu strukturu sa kristalnim zrnima veće veličine. Pri prelasku sa jednog na više stepeni rotacije mikrostruktura prevlaka postaje kompaktnija sa kristalnim zrnima manje veličine i manjom poroznošću. U skladu sa tim, najmanju hrapavost, najveću tvrdoću, najveću otpornost na lom i najveću otpornost na habanje imaju nanoslojne i nanokompozitne prevlake pripremane sa dva i tri stepena rotacije.

With the aim to develop hard coatings characterized by both, high hardness and high resistance to cracking, synergy between nanolayered and nanocomposite design was made and nanolayered TiAlN/TiSiN and CrAlN/TiSiN coatings were produced. Monolayer TiAlN, nanocomposite TiSiN and multilayer TiAlN/TiSiN were also studied in order to find the relation between the coating design and their properties. All coatings were deposited with 1-fold, 2-fold and 3-fold rotation. It is shown that coating design and type of rotation have great influence on coating microstructure and texture, and in this way on their mechanical properties, resistance to cracking, adhesion between coating and substrate, surface topography and tribological behavior. Nanolayered and nanocomposite coatings are characterized by compact nanocrystalline microstructure, while monolayer TiAlN coatings have columnar structure with larger crystalline grains. By increasing the number of rotational degrees from 1-fold to 3-fold size of crystalline grains decreases and microstructure becomes more dense. Therefore, nanolayered and nanocomposite coatings deposited with 2-fold and 3-fold rotation are characterized by the highest hardness, highest resistance to cracking, highest wear resistance and the smoothest surface topography.

Advisors/Committee Members: Škorić Branko, Kakaš Damir, Šiđanin Leposava, Panjan Peter, Radmilović Velimir.

Subjects/Keywords: Nanoslojne prevlake, nanokompozitne prevlake, mikrostruktura, mehaničke osobine, otpornost na lom,adhezija, tribološko ponašanje; Nanolayered coatings, nanocomposite coatings, microstructure, mechanical properties, crack resistance, adhesion, tribological behavior

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APA (6^th Edition):

Aleksandar, M. (2015). Razvoj nanoslojnih i nanokompozitnih metal-nitridnih prevlaka. (Thesis). University of Novi Sad. Retrieved from https://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija144767409154785.pdf?controlNumber=(BISIS)95438&fileName=144767409154785.pdf&id=4626&source=OATD&language=en ; https://www.cris.uns.ac.rs/record.jsf?recordId=95438&source=OATD&language=en

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Aleksandar, Miletić. “Razvoj nanoslojnih i nanokompozitnih metal-nitridnih prevlaka.” 2015. Thesis, University of Novi Sad. Accessed February 27, 2021. https://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija144767409154785.pdf?controlNumber=(BISIS)95438&fileName=144767409154785.pdf&id=4626&source=OATD&language=en ; https://www.cris.uns.ac.rs/record.jsf?recordId=95438&source=OATD&language=en.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Aleksandar, Miletić. “Razvoj nanoslojnih i nanokompozitnih metal-nitridnih prevlaka.” 2015. Web. 27 Feb 2021.

Vancouver:

Aleksandar M. Razvoj nanoslojnih i nanokompozitnih metal-nitridnih prevlaka. [Internet] [Thesis]. University of Novi Sad; 2015. [cited 2021 Feb 27]. Available from: https://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija144767409154785.pdf?controlNumber=(BISIS)95438&fileName=144767409154785.pdf&id=4626&source=OATD&language=en ; https://www.cris.uns.ac.rs/record.jsf?recordId=95438&source=OATD&language=en.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Aleksandar M. Razvoj nanoslojnih i nanokompozitnih metal-nitridnih prevlaka. [Thesis]. University of Novi Sad; 2015. Available from: https://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija144767409154785.pdf?controlNumber=(BISIS)95438&fileName=144767409154785.pdf&id=4626&source=OATD&language=en ; https://www.cris.uns.ac.rs/record.jsf?recordId=95438&source=OATD&language=en

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Uniwersytet im. Adama Mickiewicza w Poznaniu

2. Pshyk, Oleksandr. Cechy strukturalne i właściwości trybo-mechaniczne powłok nanokompozytowych TiAlBSiN .

Degree: 2017, Uniwersytet im. Adama Mickiewicza w Poznaniu

URL: http://hdl.handle.net/10593/21355

► W pracy doktorskiej przedstawiono wyniki badań dotyczące struktury i właściwości fizycznych pokryć opartych na TiAlSiBN o strukturze amorficznej i nanokompozytowej mikrostrukturze gradientowej. Gradientowe pokrycia TiAlBSiN… (more)

Subjects/Keywords: nanokompozyt; nanocomposite; właściwości mechaniczne; mechanical properties; powłoki zabezpieczające; protective coatings; mikrostruktura; microstructure; amorficzne pokrycie; amorphous coating

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APA (6^th Edition):

Pshyk, O. (2017). Cechy strukturalne i właściwości trybo-mechaniczne powłok nanokompozytowych TiAlBSiN . (Doctoral Dissertation). Uniwersytet im. Adama Mickiewicza w Poznaniu. Retrieved from http://hdl.handle.net/10593/21355

Chicago Manual of Style (16^th Edition):

Pshyk, Oleksandr. “Cechy strukturalne i właściwości trybo-mechaniczne powłok nanokompozytowych TiAlBSiN .” 2017. Doctoral Dissertation, Uniwersytet im. Adama Mickiewicza w Poznaniu. Accessed February 27, 2021. http://hdl.handle.net/10593/21355.

MLA Handbook (7^th Edition):

Pshyk, Oleksandr. “Cechy strukturalne i właściwości trybo-mechaniczne powłok nanokompozytowych TiAlBSiN .” 2017. Web. 27 Feb 2021.

Vancouver:

Pshyk O. Cechy strukturalne i właściwości trybo-mechaniczne powłok nanokompozytowych TiAlBSiN . [Internet] [Doctoral dissertation]. Uniwersytet im. Adama Mickiewicza w Poznaniu; 2017. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10593/21355.

Council of Science Editors:

Pshyk O. Cechy strukturalne i właściwości trybo-mechaniczne powłok nanokompozytowych TiAlBSiN . [Doctoral Dissertation]. Uniwersytet im. Adama Mickiewicza w Poznaniu; 2017. Available from: http://hdl.handle.net/10593/21355

Anna University

3. Radhika R. Tribological Properties And Wear Mechanism Of Hard Coatings;.

Degree: Crystal Growth, 2013, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/27780

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In the modern technology tribologically suitable components and newlinedevices are important to increase the energy efficiency It is possible when newlineone can reduce the friction… (more)

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In the modern technology tribologically suitable components and newlinedevices are important to increase the energy efficiency It is possible when newlineone can reduce the friction coefficient and wear of sliding components The newlineeconomic effectiveness can be achieved by better tribological system and newlinetherefore research in tribology is aimed at minimizing the energy losses newlineresulting from friction and wear In this view hard coatings deposited by newlinephysical vapor deposition PVD are adequate solutions for increasing the newlinework efficiency lifetime of tools and components newlineThe present thesis deals with hard tribological materials T Al and newlinecoatings such as TiAlN C N N N superlattice diamond like carbon DLC newlineand nanocrystalline diamond nanowire DNW films Various newlinecharacterization techniques were used to study morphology microstructure newlineand chemical state of the materials The thesis describes tribological newlineproperties of above mentioned hard coatings sliding against 100C 6 steel newlineAl O and SiC balls It also describes friction and wear based on classified newlinemechanisms and outlines material properties that influence the performance newlineof sliding surfaces Traditionally wear is associated with friction and wear newlinemechanisms are classified as adhesion abrasion erosion fatigue and newlineoxidational newlineMechanical and tribological properties of T Al alloy T AlN newlineC N carbon based coatings of DLC and nanocrystalline DNW were newlinereviewed The importance of such hard coatings and critical application in newlinemachine and industries are highlighted Moreover tribological properties and newlineevaluation of wear mechanism is introduced in the respect of microstructure newlineand chemical behavior of the sliding interfaces Various wear mechanism newlinewith different combination of sliding surfaces such as hard coating soft ball newlineand soft ball hard coating is reviewed in order to understand the wear newlinemechanism The fundamentals of some of the characterization techniques newlineused to study the mechanical tribological morphological structural and newlinechemical properties of the coating and wear track is introduced newline

Advisors/Committee Members: Arivuoli D.

Subjects/Keywords: Hard Coatings; morphology; Tribological Properties; Wear Mechanism

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APA (6^th Edition):

R, R. (2013). Tribological Properties And Wear Mechanism Of Hard Coatings;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/27780

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

R, Radhika. “Tribological Properties And Wear Mechanism Of Hard Coatings;.” 2013. Thesis, Anna University. Accessed February 27, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/27780.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

R, Radhika. “Tribological Properties And Wear Mechanism Of Hard Coatings;.” 2013. Web. 27 Feb 2021.

Vancouver:

R R. Tribological Properties And Wear Mechanism Of Hard Coatings;. [Internet] [Thesis]. Anna University; 2013. [cited 2021 Feb 27]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/27780.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

R R. Tribological Properties And Wear Mechanism Of Hard Coatings;. [Thesis]. Anna University; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/27780

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan

4. Mohammad Taheri, Masoud 1986-. Synthesis and Characterization of Hard Cr2O3 and Superhard Cr-Zr-O PVD Coatings.

Degree: 2019, University of Saskatchewan

URL: http://hdl.handle.net/10388/12374

► Reactive radio-frequency magnetron sputter technique (RF-MS) was used to deposit Cr-O and Cr-Zr-O coatings on silicon, SS316L, WC-Co, and HSS M42 substrates. The effects of… (more)

▼ Reactive radio-frequency magnetron sputter technique (RF-MS) was used to deposit Cr-O and Cr-Zr-O coatings on silicon, SS316L, WC-Co, and HSS M42 substrates. The effects of deposition temperature, chemical composition, and subsequent heat treatment on microstructural, thermal stability, and mechanical properties of both Cr-O and Cr-Zr-O coatings were investigated. The deposited coatings were characterized using scanning electron microscopy, Xray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, Energy dispersive spectroscopy, nanoindentation, Rockwell “C” indentation, optical profilometer, reciprocating wear testing, electrochemical testing, and inductively coupled plasma analysis. The results showed that appropriate deposition conditions were required in order to obtain hard Cr2O3 coating. A Cr2O3/Cr duplex interlayer was found to be suitable for nucleation of diamond coatings on WC-Co substrates as it restricted graphite formation before diamond nucleation, thus, continuous diamond coatings with good adhesion were successfully deposited on Cr2O3/Cr interlayered WC-Co substrates. Furthermore, hard Cr2O3 coatings were shown to be a potential candidate to improve the mechanical properties and to reduce the toxic ion release rate of orthopedic implants. The coated SS316L substrates illustrated better wear and corrosion resistance and lower friction coefficient compared to bare 316L substrates under a reciprocating sliding condition in saline solution. Furthermore, many fewer Cr ions were released from coated SS316L substrates after immersion tests. Adding zirconium to Cr2O3 coating shifted the onset of crystallization for the Cr2O3 coating to higher temperatures and superhard Cr-Zr-O coatings with a hardness value over 40 GPa could be obtained at a zirconium concentration of around 9.5 at. % and a substrate temperature of 300°C. The obtained superhardness could be attributed to the formation of a nanocomposite structure. Advisors/Committee Members: Cree, Duncan, N. Oguocha, kechukwuka, Zhang, W.J. (Chris), P. Bradley, Michael.

Subjects/Keywords: PVD; Coatings; Cr2O3; Cr-Zr-O; Mechanical Properties; Microstructure

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APA (6^th Edition):

Mohammad Taheri, M. 1. (2019). Synthesis and Characterization of Hard Cr2O3 and Superhard Cr-Zr-O PVD Coatings. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/12374

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mohammad Taheri, Masoud 1986-. “Synthesis and Characterization of Hard Cr2O3 and Superhard Cr-Zr-O PVD Coatings.” 2019. Thesis, University of Saskatchewan. Accessed February 27, 2021. http://hdl.handle.net/10388/12374.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mohammad Taheri, Masoud 1986-. “Synthesis and Characterization of Hard Cr2O3 and Superhard Cr-Zr-O PVD Coatings.” 2019. Web. 27 Feb 2021.

Vancouver:

Mohammad Taheri M1. Synthesis and Characterization of Hard Cr2O3 and Superhard Cr-Zr-O PVD Coatings. [Internet] [Thesis]. University of Saskatchewan; 2019. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10388/12374.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mohammad Taheri M1. Synthesis and Characterization of Hard Cr2O3 and Superhard Cr-Zr-O PVD Coatings. [Thesis]. University of Saskatchewan; 2019. Available from: http://hdl.handle.net/10388/12374

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Indian Institute of Science

5. Yadav, Arti. Nano Porous Alumina Based Composite Coating for Tribological Applications.

Degree: PhD, Faculty of Engineering, 2018, Indian Institute of Science

URL: http://etd.iisc.ac.in/handle/2005/3055

► Anodisation is a surface treatment process, commonly used to form a protective oxide coating on the surface of metals like aluminium. Anodised coatings, being grown… (more)

▼ Anodisation is a surface treatment process, commonly used to form a protective oxide coating on the surface of metals like aluminium. Anodised coatings, being grown out of the base metal have excellent interface strength but are porous and brittle. Porosity of the coating reduces the hardness and the brittle nature of the oxide induces cracking. In practice, the pores are typically filled with organic dye and sealed. Under certain controlled electrochemical conditions, anodisation results in a highly ordered hexagonal porous structure in pure aluminium. In this work, we explore the possibility of using this ordered porous alumina to form a novel metal nanocomposite as a tribological coating. By optimizing the nonporous structure and tuning the electrodeposition process, we uniformly filled the ordered pores with copper. We have measured the hardness of the resulting ordered and aligned nanocomposite. We explore the possibility of using this composite coating for tribological applications by carrying out some preliminary reciprocating wear test. Ordered porous alumina layer is formed by a two-step anodisation process. By optimizing the anodisation conditions, we control the thickness of the coating and the pore size. The interface of the porous structure and aluminium substrate is defined by a non-conducting dense barrier oxide layer. However, to deposit metal into the pores, a conducting path should be established through the barrier layer. One possibility is to etch out the bottom of the pores at the cost of the interface strength and losing out on the main advantage of anodised coatings. To be able to fill metal without this sacrifice, we utilised the dendritic structure in the barrier layer formed by a step-wise reduction of voltage towards the end of anodisation process. Optimisation of this dendritic structure led to uniform deposition of metal into pores, achieved by pulsed electrodeposition. In pulse lectrodeposition, a positive pulse is applied to remove accumulated charge near to the bottom of pores, followed by a negative pulse to deposit metal and a delay to allow diffusion of ions. By optimising the pulse shape and duration, we have achieved uniform growth of metal into pores. Further, monitoring the deposition current helped us to identify and control different phases of growth of the nanowire. The properties of the porous alumina and the nanocomposite were measured by nanoindentation. The deformation characteristics were obtained by observing the indents in a FE-SEM. We find that dendritic modification of interface has very little effect on the hardness of the porous alumina layer. We also found that the porous alumina deformed either by compaction or by forming circumferential and radial cracks. When copper is filled in the nano pores, the hardness increased by 50% and no circumferential cracks were found up to the load of 10 mN for a film thickness of about 1 µm. Coefficient of friction of the coating reciprocated against steel in dry condition is found to be around 0.4. Minimal wear was observed… Advisors/Committee Members: Bobji, M S (advisor).

Subjects/Keywords: Porous Alumina; Tribological Coating; Composite CoatingS; Nanocomposites; Nanocomposite Coatings; Aluimina Anodisation; Metal Electrochemical Deposition; Nanoindentation; Porous Alumina Film Desposition; Nanoporous Alumina; Ordered Porous Alumina; Mechanical Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yadav, A. (2018). Nano Porous Alumina Based Composite Coating for Tribological Applications. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/3055

Chicago Manual of Style (16^th Edition):

Yadav, Arti. “Nano Porous Alumina Based Composite Coating for Tribological Applications.” 2018. Doctoral Dissertation, Indian Institute of Science. Accessed February 27, 2021. http://etd.iisc.ac.in/handle/2005/3055.

MLA Handbook (7^th Edition):

Yadav, Arti. “Nano Porous Alumina Based Composite Coating for Tribological Applications.” 2018. Web. 27 Feb 2021.

Vancouver:

Yadav A. Nano Porous Alumina Based Composite Coating for Tribological Applications. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2018. [cited 2021 Feb 27]. Available from: http://etd.iisc.ac.in/handle/2005/3055.

Council of Science Editors:

Yadav A. Nano Porous Alumina Based Composite Coating for Tribological Applications. [Doctoral Dissertation]. Indian Institute of Science; 2018. Available from: http://etd.iisc.ac.in/handle/2005/3055

6. Neill, Dustin. Characterization of mirco/nano mechanical and tribological properties of polymeric coatings deposited on steel.

Degree: MS, Physics and Astronomy, 2012, Eastern Michigan University

URL: https://commons.emich.edu/theses/416

► This study aims to characterize the mechanical and tribological properties of three different polymeric coatings—polyurethane, 2K, and melamine—deposited on steel by analyzing the hardness,… (more)

Subjects/Keywords: melamine; adhesion; mechanical; tribological; polymeric coatings; Physics

…characterize the tribological properties of coatings, i.e. the scratch resistance, are the Taber test… …study the mechanical and tribological properties of the three coatings. Nanoindentation is a… …scratch resistance of the tested coatings with their physical and chemical properties. In the… …it was not the main focus of characterizing the mechanical and tribological properties of… …tribological properties of three different polymeric coatings—polyurethane, 2K, and melamine…

10 more images…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Neill, D. (2012). Characterization of mirco/nano mechanical and tribological properties of polymeric coatings deposited on steel. (Masters Thesis). Eastern Michigan University. Retrieved from https://commons.emich.edu/theses/416

Chicago Manual of Style (16^th Edition):

Neill, Dustin. “Characterization of mirco/nano mechanical and tribological properties of polymeric coatings deposited on steel.” 2012. Masters Thesis, Eastern Michigan University. Accessed February 27, 2021. https://commons.emich.edu/theses/416.

MLA Handbook (7^th Edition):

Neill, Dustin. “Characterization of mirco/nano mechanical and tribological properties of polymeric coatings deposited on steel.” 2012. Web. 27 Feb 2021.

Vancouver:

Neill D. Characterization of mirco/nano mechanical and tribological properties of polymeric coatings deposited on steel. [Internet] [Masters thesis]. Eastern Michigan University; 2012. [cited 2021 Feb 27]. Available from: https://commons.emich.edu/theses/416.

Council of Science Editors:

Neill D. Characterization of mirco/nano mechanical and tribological properties of polymeric coatings deposited on steel. [Masters Thesis]. Eastern Michigan University; 2012. Available from: https://commons.emich.edu/theses/416

7. Τριάντου, Κωστούλα. Μελέτη απλών και σύνθετων επικαλύψεων ψυχρού ψεκασμού: μικροδομή, μηχανισμός συναπόθεσης, τριβολογία και αντοχή σε διάβρωση.

Degree: 2012, National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)

URL: http://hdl.handle.net/10442/hedi/27377

► The present thesis is entitled “Study of simple and composite cold sprayed coatings: microstructure, co-deposition mechanism, tribology and corrosion resistance”. A complete study of metallic… (more)

▼ The present thesis is entitled “Study of simple and composite cold sprayed coatings: microstructure, co-deposition mechanism, tribology and corrosion resistance”. A complete study of metallic and composite (metal+ceramic) coatings produced using cold spray, was the aim of this thesis. Cold Gas Dynamic Spray or Cold Spray is the most recent development in the field of spray techniques for the production of coatings. In this process, the gas (nitrogen, helium or air) is introduced into a Laval type nozzle and produces a supersonic gas flow. Spray particles are accelerated to a high velocity (typically 300-1200 m/s) and are deposited at a temperature well below their melting temperature. Initially in this research, three different materials with important industrial applications were cold sprayed: copper on Al2017 substrate, CoNiCrAlY on Hastelloy X substrate and titanium on Ti6Al4V substrate. The microstructure of these coatings was studied in order to determine the most suitable material for cold spraying. Also, copper and CoNiCrAlY coatings were compared with coatings obtained using conventional thermal spray techniques (High Velocity Oxy-Fuel and Wire Arc). The most suitable material for cold spray was found to be copper due to the high deformation of copper particles. Cold sprayed copper coatings were qualitatively superior, as they were fully dense, they did not contain oxides and the coating-substrate interface did not present any defects (micro-cracks, porosity or voids). Cold sprayed CoNiCrAlY coatings and Ti coatings contained porosity and voids (4.2% and 14%, respectively). Oxidation was not observed in any of the cold sprayed coatings. Considering that copper was the most suitable material for use in cold spray, composite Cu+Al2O3 coatings on Al2017 substrate were studied. The aim was to study the microstructural characteristics of the coatings as well as to understand the way that copper and alumina particles were co-deposited. A copper powder of 13μm particle size and two alumina powders, a fine with a size range of 2-12 μm and a coarse of 15-45 μm size range, were used in order to prepare the feedstock mixtures. The copper powder was mechanically blended with each one of the alumina powders in various Al2O3 contents: 0, 10, 20, 25 and 30%wt. Porosity of all the composite and pure copper coatings was very low (<1%). Al2O3 particles were uniformly dispersed in the copper matrix of the composite coatings. Spraying with mixtures of 10, 20, 25 and 30%wt. Al2O3 resulted in coatings with 3, 5, 6 and 7% area (and volume) fraction. The %wt. percentage of deposited particles was equal to 10% of the initial percentage in the feedstock mixture. Since alumina particles could not be deformed on impact, some very small gaps (1-2μm) surrounding the hard phase particles were observed. Craters and deformations of angular morphology were observed in the surface of the coatings. They were created from Cu and Al2O3 particles (respectively) that impacted, but rebounded and did not adhere. Also, fragmentation of large Al2O3…

Subjects/Keywords: Μεταλλικές επικαλύψεις (χαλκός, κράμα CoNiCrAlY, τιτάνιο); Σύνθετες μεταλλο-κεραμικές επικαλύψεις (χαλκός+αλούμινα; Ψυχρός ψεκασμός; Μικροδομή επικαλύψεων ψυχρού ψεκασμού; Μηχανισμός συναπόθεσης σωματιδίων κατά τον ψυχρό ψεκασμό; Συμπεριφορά σε τριβή-φθορά; Αντοχή σε διάβρωση; Metallic coatings (copper, CoNiCrAlY alloy, titanium; Composite metal+ceramic coatings (copper+alumina; Cold Spray or Cold Gas Dynamic Spray; Microstructure of cold sprayed coatings; Co-deposition mechanism of particles during cold spraying; Tribological behavior; Corrosion resistance

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APA (6^th Edition):

Τριάντου, . �. (2012). Μελέτη απλών και σύνθετων επικαλύψεων ψυχρού ψεκασμού: μικροδομή, μηχανισμός συναπόθεσης, τριβολογία και αντοχή σε διάβρωση. (Thesis). National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ). Retrieved from http://hdl.handle.net/10442/hedi/27377

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Τριάντου, Κωστούλα. “Μελέτη απλών και σύνθετων επικαλύψεων ψυχρού ψεκασμού: μικροδομή, μηχανισμός συναπόθεσης, τριβολογία και αντοχή σε διάβρωση.” 2012. Thesis, National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ). Accessed February 27, 2021. http://hdl.handle.net/10442/hedi/27377.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Τριάντου, Κωστούλα. “Μελέτη απλών και σύνθετων επικαλύψεων ψυχρού ψεκασμού: μικροδομή, μηχανισμός συναπόθεσης, τριβολογία και αντοχή σε διάβρωση.” 2012. Web. 27 Feb 2021.

Vancouver:

Τριάντου �. Μελέτη απλών και σύνθετων επικαλύψεων ψυχρού ψεκασμού: μικροδομή, μηχανισμός συναπόθεσης, τριβολογία και αντοχή σε διάβρωση. [Internet] [Thesis]. National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ); 2012. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10442/hedi/27377.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Τριάντου �. Μελέτη απλών και σύνθετων επικαλύψεων ψυχρού ψεκασμού: μικροδομή, μηχανισμός συναπόθεσης, τριβολογία και αντοχή σε διάβρωση. [Thesis]. National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ); 2012. Available from: http://hdl.handle.net/10442/hedi/27377

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of New South Wales

8. Wang, Jian. Microstructure and Mechanical Properties of Compound and High Entropy Alloy Coatings.

Degree: Materials Science & Engineering, 2019, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/67994 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:68833/SOURCE02?view=true

► Hard coatings have been widely used for decades in a range of applications, such as cutting tools or medical devices. In this thesis, the microstructure… (more)

Subjects/Keywords: Compound Alloy Coatings; Microstructures; Mechanical Properties; High Entropy Alloy Coatings

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APA (6^th Edition):

Wang, J. (2019). Microstructure and Mechanical Properties of Compound and High Entropy Alloy Coatings. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/67994 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:68833/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Wang, Jian. “Microstructure and Mechanical Properties of Compound and High Entropy Alloy Coatings.” 2019. Doctoral Dissertation, University of New South Wales. Accessed February 27, 2021. http://handle.unsw.edu.au/1959.4/67994 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:68833/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Wang, Jian. “Microstructure and Mechanical Properties of Compound and High Entropy Alloy Coatings.” 2019. Web. 27 Feb 2021.

Vancouver:

Wang J. Microstructure and Mechanical Properties of Compound and High Entropy Alloy Coatings. [Internet] [Doctoral dissertation]. University of New South Wales; 2019. [cited 2021 Feb 27]. Available from: http://handle.unsw.edu.au/1959.4/67994 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:68833/SOURCE02?view=true.

Council of Science Editors:

Wang J. Microstructure and Mechanical Properties of Compound and High Entropy Alloy Coatings. [Doctoral Dissertation]. University of New South Wales; 2019. Available from: http://handle.unsw.edu.au/1959.4/67994 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:68833/SOURCE02?view=true

Vilnius Gediminas Technical University

9. Rodžianskas, Tomas. Elektrolankinio purškimo skirtingomis vielomis tyrimas.

Degree: Master, Materials Engineering, 2014, Vilnius Gediminas Technical University

URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2014~D_20140619_092224-76020 ;

►

Baigiamajame magistro darbe nagrinėjamos elektrolankiniu purškimu skirtingomis vielomis užpurkštos dangos. Atlikta terminio purškimo dangų, jų technologijų apžvalga ir analizė, pateikta dangų tyrimo metodika. Metalo paviršinis… (more)

▼

Baigiamajame magistro darbe nagrinėjamos elektrolankiniu purškimu skirtingomis vielomis užpurkštos dangos. Atlikta terminio purškimo dangų, jų technologijų apžvalga ir analizė, pateikta dangų tyrimo metodika. Metalo paviršinis sluoksnis dengiamas siekiant pakeisti jo mechanines bei fizikines savybes, suteikti atsparumą išorės poveikiui ir pagerinti estetinį vaizdą. Atlikti nerūdijančio plieno, jūrinės bronzos bei jų kombinuotos dangų mikrostruktūros, mikrokietumo, dangos tamprumo modulio bei adhezijos tyrimai. Gauti rezultatai pateikti grafiškai. Išnagrinėjus praktinius ir skaitinius terminio purškimo dangų rezultatus, pateikiamos baigiamojo darbo išvados. Darbą sudaro 5 dalys: įvadas, literatūros šaltinių apžvalga ir analizė, elektrolankiniu purškimu gautų dangų tyrimai, išvados, literatūros sąrašas. Darbo apimtis – 59 p. teksto, 55 iliustr., 14 lent., 18 bibliografinių šaltinių.

In the final master thesis examined coatings by arc spraying with different solid wires. The review of thermal spray coatings technology and research methods are described. The metal surface coating was applied to modify it‘s mechanical and physical properties, also resistance to external impact and improve aesthetics view. The research of stainless steel, marine bronze and combined coating microstructures, microhardness modulus of elesticity and adhesion were carried out. The results are presented graphically. The experimental and numerical results of thermal spray coatings were analysed and conclusions were given. Structure of work: introduction, literature review and analysis, research of coatings by arc spraying, coclusions, references. Thesis consist of – 59 p. text, 55 pictures, 14 tables, 18 bibliografical entries.

Advisors/Committee Members: Gedzevičius, Irmantas (Master’s thesis supervisor), Višniakas, Ivanas (Master’s thesis reviewer), Černašėjus, Olegas (Master’s thesis reviewer), Jurčius, Aurimas (Master’s degree committee chair), Valiulis, Algirdas Vaclovas (Master’s degree committee member), Višniakas, Ivanas (Master’s degree committee member), Gedzevičius, Irmantas (Master’s degree committee member), Černašėjus, Olegas (Master’s degree committee member), Nagurnas, Saulius (Master’s degree committee member), Kandrotaitė Janutienė, Rasa (Master’s degree committee member).

Subjects/Keywords: Adhezija; Dangos; Lankas; Mikrokietumas; Mikrostruktūros; Adhesion; Arc; Coatings; Microhardness; Microstructure

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APA (6^th Edition):

Rodžianskas, Tomas. (2014). Elektrolankinio purškimo skirtingomis vielomis tyrimas. (Masters Thesis). Vilnius Gediminas Technical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2014~D_20140619_092224-76020 ;

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

Rodžianskas, Tomas. “Elektrolankinio purškimo skirtingomis vielomis tyrimas.” 2014. Masters Thesis, Vilnius Gediminas Technical University. Accessed February 27, 2021. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2014~D_20140619_092224-76020 ;.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

Rodžianskas, Tomas. “Elektrolankinio purškimo skirtingomis vielomis tyrimas.” 2014. Web. 27 Feb 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

Rodžianskas, Tomas. Elektrolankinio purškimo skirtingomis vielomis tyrimas. [Internet] [Masters thesis]. Vilnius Gediminas Technical University; 2014. [cited 2021 Feb 27]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2014~D_20140619_092224-76020 ;.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

Rodžianskas, Tomas. Elektrolankinio purškimo skirtingomis vielomis tyrimas. [Masters Thesis]. Vilnius Gediminas Technical University; 2014. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2014~D_20140619_092224-76020 ;

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Manchester

10. Zhao, Yang. Evaluation and characterisation of thermal barrier coatings.

Degree: PhD, 2013, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/evaluation-and-characterisation-of-thermal-barrier-coatings(b6b8d5ef-0cd3-4257-9563-6a6b1626cb49).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607074

► Evaluation and characterisation of thermal barrier coatings (TBCs) have been conducted correlating microstructure with physical and mechanical properties, to further understand TBC failure mechanisms and… (more)

▼ Evaluation and characterisation of thermal barrier coatings (TBCs) have been conducted correlating microstructure with physical and mechanical properties, to further understand TBC failure mechanisms and performances in this thesis. A modified four-point bending test was employed to investigate the interfacial toughness of atmospheric plasma sprayed TBCs. The delamination of the TBCs occurred mainly within the topcoat. The energy release rate increased from ~50 J/m-2 for as-sprayed conditions to ~120 J/m-2 after annealing at 1150 ºC for 200 hours with a loading phase angle about 42º. Micro X-ray tomography revealed how various types of imperfections developed near the interface and the 3D interface was characterised. Stress measurements by photoluminescence piezospectroscopy (PLPS) and analytical solutions were combined to investigate the local stress around spherically symmetrical portions of a TGO layer formed on Fecralloy. Spherical indenters were used to create curvature with different curvature radii and depths on alloys. The effect of curvature radius on stress was found to be more significant than the depth of local curved area. TGO stress as a function of oxidation time at the curved areas was also discussed. Electron beam physical vapour deposited (EBPVD) TBCs with a β-(Ni,Pt)Al bond coat on CMSX4 substrate were investigated by micro X-ray computed tomography (XCT). The 3D microstructures evolution and damage accumulation were studied. 3D interfacial roughness was calculated and compared to scanning electron microscope image analysis. The calculated interfacial roughness did not change much even after 200 thermal cycles, indicating there was not obvious rumpling in this TBCs sample. Commercial simple and Pt-modified aluminide coatings were studied and compared. Both coatings consisted mainly of β-NiAl phase. Thermogravimetric analysis (TGA) tests indicated that the Pt-modified aluminide coating was much more resistive for oxidation than simple aluminide coating. Instrumented indentation was used to measure the mechanical properties, showing the coatings had similar young’s modulus around 130 GPa while Pt-modified aluminide coating was more ductile and had a higher fracture toughness than simple aluminide coating. The Raman spectra of yttria-stabilised zirconia (YSZ) in the temperature range of 25-1100 ºC were investigated. The peak shift and broadening were carefully analysed. The thermal mismatch stress was found to have a negligible effect on the Raman shift. The dependence can be used to monitor the temperature in YSZ without contact.

Subjects/Keywords: 667; thermal barrier coatings; mechanical properties

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zhao, Y. (2013). Evaluation and characterisation of thermal barrier coatings. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/evaluation-and-characterisation-of-thermal-barrier-coatings(b6b8d5ef-0cd3-4257-9563-6a6b1626cb49).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607074

Chicago Manual of Style (16^th Edition):

Zhao, Yang. “Evaluation and characterisation of thermal barrier coatings.” 2013. Doctoral Dissertation, University of Manchester. Accessed February 27, 2021. https://www.research.manchester.ac.uk/portal/en/theses/evaluation-and-characterisation-of-thermal-barrier-coatings(b6b8d5ef-0cd3-4257-9563-6a6b1626cb49).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607074.

MLA Handbook (7^th Edition):

Zhao, Yang. “Evaluation and characterisation of thermal barrier coatings.” 2013. Web. 27 Feb 2021.

Vancouver:

Zhao Y. Evaluation and characterisation of thermal barrier coatings. [Internet] [Doctoral dissertation]. University of Manchester; 2013. [cited 2021 Feb 27]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/evaluation-and-characterisation-of-thermal-barrier-coatings(b6b8d5ef-0cd3-4257-9563-6a6b1626cb49).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607074.

Council of Science Editors:

Zhao Y. Evaluation and characterisation of thermal barrier coatings. [Doctoral Dissertation]. University of Manchester; 2013. Available from: https://www.research.manchester.ac.uk/portal/en/theses/evaluation-and-characterisation-of-thermal-barrier-coatings(b6b8d5ef-0cd3-4257-9563-6a6b1626cb49).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607074

Brno University of Technology

11. Saggar, Richa. Processing and Properties of 1D and 2D Boron Nitride Nanomaterials Reinforced Glass Composites: Processing and Properties of 1D and 2D Boron Nitride Nanomaterials Reinforced Glass Composites.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/63681

► Glasses and ceramics offer several unique characteristics over polymers or metals. However, they suffer from a shortcoming due to their brittle nature, falling short in… (more)

▼ Glasses and ceramics offer several unique characteristics over polymers or metals. However, they suffer from a shortcoming due to their brittle nature, falling short in terms of fracture toughness and mechanical strength. The aim of this work is to reinforce borosilicate glass matrix with reinforcements to increase the fracture toughness and strength of the glass. Boron nitride nanomaterials, i.e. nanotubes and nanosheets have been used as possible reinforcements for the borosilicate glass matrix. The tasks of the thesis are many fold which include: 1. Reinforcement of commercially derived and morphologically different (bamboo like and cylinder like) boron nitride nanotubes in borosilicate glass with the concentration of 0 wt%, 2.5 wt% and 5 wt% by ball milling process. Same process was repeated with reinforcing cleaned boron nitride nanotubes (after acid purification) into the borosilicate glass with similar concentrations. 2. Production of boron nitride nanosheets using liquid exfoliation technique to produce high quality and high aspect ratio nanosheets. These boron nitride nanosheets were reinforced in the borosilicate glass matrix with concentrations of 0 wt%, 2.5 wt% and 5 wt% by ball milling process. The samples were consolidated using spark plasma sintering. These composites were studied in details in terms of material analysis like thermo-gravimetric analysis, detailed scanning electron microscopy and transmission electron microscopy for the quality of reinforcements etc.; microstructure analysis which include the detailed study of the composite powder samples, the densities of bulk composite samples etc; mechanical properties which include fracture toughness, flexural strength, micro-hardness, Young’s modulus etc. and; tribological properties like scratch resistance and wear resistance. Cleaning process of boron nitride nanotubes lead to reduction in the Fe content (present in boron nitride nanotubes during their production as a catalyst) by ~54%. This leads to an improvement of ~30% of fracture toughness measured by chevron notch technique for 5 wt% boron nitride nanotubes reinforced borosilicate glass. It also contributed to the improvement of scratch resistance by ~26% for the 5 wt% boron nitride nanotubes reinforced borosilicate glass matrix. On the other hand, boron nitride nanosheets were successfully produced using liquid exfoliation technique with average length was ~0.5 µm and thickness of the nanosheets was between 4-30 layers. It accounted to an improvement of ~45% for both fracture toughness and flexural strength by reinforcing 5 wt% of boron nitride nanosheets. The wear rates reduced by ~3 times while the coefficient of friction was reduced by ~23% for 5 wt% boron nitride nanosheets reinforcements. Resulting improvements in fracture toughness and flexural strength in the composite materials were observed due to high interfacial bonding between the boron nitride nanomaterials and borosilicate glass matrix resulting in efficient load transfer. Several toughening and strengthening mechanisms like… Advisors/Committee Members: Dlouhý, Ivo (advisor), Cihlář, Jaroslav (referee), Tatarko, Peter (referee).

Subjects/Keywords: Keywords: Boron nitride nanosheets; Boron nitride nanotubes; Borosilicate glass; Nanocomposite; Mechanical properties; Tribological properties.; Keywords: Boron nitride nanosheets; Boron nitride nanotubes; Borosilicate glass; Nanocomposite; Mechanical properties; Tribological properties.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Saggar, R. (2019). Processing and Properties of 1D and 2D Boron Nitride Nanomaterials Reinforced Glass Composites: Processing and Properties of 1D and 2D Boron Nitride Nanomaterials Reinforced Glass Composites. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/63681

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Saggar, Richa. “Processing and Properties of 1D and 2D Boron Nitride Nanomaterials Reinforced Glass Composites: Processing and Properties of 1D and 2D Boron Nitride Nanomaterials Reinforced Glass Composites.” 2019. Thesis, Brno University of Technology. Accessed February 27, 2021. http://hdl.handle.net/11012/63681.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Saggar, Richa. “Processing and Properties of 1D and 2D Boron Nitride Nanomaterials Reinforced Glass Composites: Processing and Properties of 1D and 2D Boron Nitride Nanomaterials Reinforced Glass Composites.” 2019. Web. 27 Feb 2021.

Vancouver:

Saggar R. Processing and Properties of 1D and 2D Boron Nitride Nanomaterials Reinforced Glass Composites: Processing and Properties of 1D and 2D Boron Nitride Nanomaterials Reinforced Glass Composites. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/11012/63681.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Saggar R. Processing and Properties of 1D and 2D Boron Nitride Nanomaterials Reinforced Glass Composites: Processing and Properties of 1D and 2D Boron Nitride Nanomaterials Reinforced Glass Composites. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/63681

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Manchester

12. Eaves, Elizabeth. Soft-soft nanocomposite coating materials produced by emulsion polymerisation.

Degree: 2015, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:266749

►

AbstractElizabeth EavesThe University of ManchesterPhD Polymer Science and Engineering“Soft-soft nanocomposite coating materials produced by emulsion polymerisation”March 2015This thesis reports on the challenge of applying an… (more)

▼

AbstractElizabeth EavesThe University of ManchesterPhD Polymer Science and Engineering“Soft-soft nanocomposite coating materials produced by emulsion polymerisation”March 2015This thesis reports on the challenge of applying an innovative ‘soft-soft nanocomposite’ design strategy to establish synthesis parameters that affect the performance of coatings based upon water-borne latexes, which is driven by the environmental and legislative need to develop feasible alternatives to solvent-borne coatings. A framework emulsion polymerisation formulation to synthesise core-shell latexes with (poly[(butyl acrylate)-co-(butyl methacrylate)]) core and (poly[(butyl acrylate)-co-(butyl methacrylate)-co-(diacetone acrylamide)]) shell copolymer phases in a controlled manner was established, with high monomer conversions and approximately constant particle numbers. Retention of particle morphology in the films was confirmed using atomic force microscopy (AFM). The effect of adding adipic acid dihydrazide to the latex post-polymerisation to facilitate crosslinking of the shell phase during film formation was found to have a significant effect on the stress-strain properties of latex films. A core:shell mass ratio of 80:20 was found to be optimum in all crosslinked systems tested. Increasing the amount of crosslinking in the shell phase of the particles was found to have an effect on the large strain tensile properties of films, leading to strain hardening with reduced extension to break and higher failure stresses at higher crosslinker levels. Core phase copolymer Tg had a very significant effect upon the low strain mechanical properties, with Young’s modulus values of 5-180 MPa being accessible in the range of core Tg¬s from 5 – 25 °C, although little difference in mechanical behaviour was seen when varying the shell phase Tg from 5 – 15 °C. Adding 2 wt% methacrylic acid (MAA) to the shell phase copolymer gave an additional improvement in the low strain tensile region, with a Young’s modulus of 425 MPa being realised. However, it was found that additional amounts of MAA (up to 5 wt% in the shell phase) were deterious to film properties, with low Young’s modulus and poor extensibility. This was interpreted as being due to an increased concentration of ionomeric crosslinks restricting interparticle chain diffusion and keto-hydrazide crosslinking. Studies to evaluate the mechanical performance of soft-soft nanocomposite films compared to binder latexes used in commercial products were favourable, and showed that a high level of versatility with regards to mechanical properties is possible.

None

Advisors/Committee Members: Lovell, Peter.

Subjects/Keywords: Polymer; Film formation; Coatings; Nanocomposite

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Eaves, E. (2015). Soft-soft nanocomposite coating materials produced by emulsion polymerisation. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:266749

Chicago Manual of Style (16^th Edition):

Eaves, Elizabeth. “Soft-soft nanocomposite coating materials produced by emulsion polymerisation.” 2015. Doctoral Dissertation, University of Manchester. Accessed February 27, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:266749.

MLA Handbook (7^th Edition):

Eaves, Elizabeth. “Soft-soft nanocomposite coating materials produced by emulsion polymerisation.” 2015. Web. 27 Feb 2021.

Vancouver:

Eaves E. Soft-soft nanocomposite coating materials produced by emulsion polymerisation. [Internet] [Doctoral dissertation]. University of Manchester; 2015. [cited 2021 Feb 27]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:266749.

Council of Science Editors:

Eaves E. Soft-soft nanocomposite coating materials produced by emulsion polymerisation. [Doctoral Dissertation]. University of Manchester; 2015. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:266749

Brno University of Technology

13. Ivanič, Michal. Materiály a metody testování vlastností žárově stříkaných povlaků: Thermal spray coatings; materials and techniques for testing its properties.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/67406

► Bachelor thesis deals with the distribution of thermal spray coatings according to their use, and methods used to testing their properties. The first part describes… (more)

Subjects/Keywords: tepelný nástrek; materiály povlakov; vlastnosti povlakov; adhézne testy povlakov; testy odolnosti povlakov voči opotrebeniu; testovanie povlakov pre vysokoteplotné aplikácie; thermal spray coatings; coatings materials; coatings properties; adhesion tests; wear resistance tests; high temperature tests

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ivanič, M. (2019). Materiály a metody testování vlastností žárově stříkaných povlaků: Thermal spray coatings; materials and techniques for testing its properties. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/67406

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ivanič, Michal. “Materiály a metody testování vlastností žárově stříkaných povlaků: Thermal spray coatings; materials and techniques for testing its properties.” 2019. Thesis, Brno University of Technology. Accessed February 27, 2021. http://hdl.handle.net/11012/67406.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ivanič, Michal. “Materiály a metody testování vlastností žárově stříkaných povlaků: Thermal spray coatings; materials and techniques for testing its properties.” 2019. Web. 27 Feb 2021.

Vancouver:

Ivanič M. Materiály a metody testování vlastností žárově stříkaných povlaků: Thermal spray coatings; materials and techniques for testing its properties. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/11012/67406.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ivanič M. Materiály a metody testování vlastností žárově stříkaných povlaků: Thermal spray coatings; materials and techniques for testing its properties. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/67406

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

14. Ilangovan, S. Investigation of the mechanical properties and wear behaviour of sand cast copper nickel tin alloys; -.

Degree: Engineering, 2004, Amrita Vishwa Vidyapeetham (University)

URL: http://shodhganga.inflibnet.ac.in/handle/10603/13062

►

The effect of strengthening by spinodal decomposition on the mechanical properties and the wear behavior has been investigated on cast copper-nickel-tin alloys. The investigation was… (more)

Subjects/Keywords: Mechanical Engineering; Copper; Mechanical properties; Nickel; Tin; Hardening; Tribological behaviour

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APA (6^th Edition):

Ilangovan, S. (2004). Investigation of the mechanical properties and wear behaviour of sand cast copper nickel tin alloys; -. (Thesis). Amrita Vishwa Vidyapeetham (University). Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/13062

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ilangovan, S. “Investigation of the mechanical properties and wear behaviour of sand cast copper nickel tin alloys; -.” 2004. Thesis, Amrita Vishwa Vidyapeetham (University). Accessed February 27, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/13062.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ilangovan, S. “Investigation of the mechanical properties and wear behaviour of sand cast copper nickel tin alloys; -.” 2004. Web. 27 Feb 2021.

Vancouver:

Ilangovan S. Investigation of the mechanical properties and wear behaviour of sand cast copper nickel tin alloys; -. [Internet] [Thesis]. Amrita Vishwa Vidyapeetham (University); 2004. [cited 2021 Feb 27]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/13062.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ilangovan S. Investigation of the mechanical properties and wear behaviour of sand cast copper nickel tin alloys; -. [Thesis]. Amrita Vishwa Vidyapeetham (University); 2004. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/13062

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Colorado School of Mines

15. Ward, Logan. Tribological and structural properties of titanium nitride and titanium aluminum nitride coatings deposited with modulated pulsed power magnetron sputtering.

Degree: MS(M.S.), Metallurgical and Materials Engineering, 2014, Colorado School of Mines

URL: http://hdl.handle.net/11124/508

► The demand for economical high-performance materials has brought attention to the development of advanced coatings. Recent advances in high power magnetron sputtering (HPPMS) have shown… (more)

▼ The demand for economical high-performance materials has brought attention to the development of advanced coatings. Recent advances in high power magnetron sputtering (HPPMS) have shown to improve tribological properties of coatings. These coatings offer increased wear and oxidation resistance, which may facilitate the use of more economical materials in harsh applications. This study demonstrates the use of novel forms of HPPMS, namely modulated pulsed-power magnetron sputtering (MPPMS) and deep oscillation magnetron sputtering (DOMS), for depositing TiN and Ti[subscript 1-x]Al[subscript x]N tribological coatings on commonly used alloys, such as Ti-6Al-4V and Inconel 718. Both technologies have been shown to offer unique plasma characteristics in the physical vapor deposition (PVD) process. High power pulses lead to a high degree of ionization compared to traditional direct-current magnetron sputtering (DCMS) and pulsed magnetron sputtering (PMS). Such a high degree of ionization was previously only achievable by cathodic arc deposition (CAD); however, CAD can lead to increased macroparticles that are unfavorable in high friction and corrosive environments. MPPMS, DOMS, and other HPPMS techniques offer unique plasma characteristics and have been shown to produce coatings with refined grain structure, improved density, hardness, adhesion, and wear resistance. Using DOMS and MPPMS, TiN and Ti[subscript 1-x]Al[subscript x]N coatings were deposited using PMS to compare microstructures and tribological performance. For Ti[subscript 1-x]Al[subscript x]N, two sputtering target compositions, 50Ti-50Al and 30Ti-70Al, were used to evaluate the effects of MPPMS on the coating's composition and tribological properties. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD) were used to characterize microstructure and crystallographic texture. Several tribological properties were evaluated including: wear rate, coefficient of friction, adhesion, and nanohardness. Results show that substrate material can have a significant effect on adhesion and the mechanical response between the coating and substrate. Depending on deposition parameters and the selected material MPPMS and DOMS are promising alternatives to DCMS, PMS, and CAD. Advisors/Committee Members: Kaufman, Michael J. (advisor), Reimanis, Ivar E. (Ivar Edmund) (committee member), Lin, Jianliang (committee member).

Subjects/Keywords: tribological; high power magnetron sputtering; coatings; thin films; modulated pulsed power magnetron sputtering; wear resistant; Coatings; Magnetron sputtering; Titanium nitride; Tribology; Microstructure

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ward, L. (2014). Tribological and structural properties of titanium nitride and titanium aluminum nitride coatings deposited with modulated pulsed power magnetron sputtering. (Masters Thesis). Colorado School of Mines. Retrieved from http://hdl.handle.net/11124/508

Chicago Manual of Style (16^th Edition):

Ward, Logan. “Tribological and structural properties of titanium nitride and titanium aluminum nitride coatings deposited with modulated pulsed power magnetron sputtering.” 2014. Masters Thesis, Colorado School of Mines. Accessed February 27, 2021. http://hdl.handle.net/11124/508.

MLA Handbook (7^th Edition):

Ward, Logan. “Tribological and structural properties of titanium nitride and titanium aluminum nitride coatings deposited with modulated pulsed power magnetron sputtering.” 2014. Web. 27 Feb 2021.

Vancouver:

Ward L. Tribological and structural properties of titanium nitride and titanium aluminum nitride coatings deposited with modulated pulsed power magnetron sputtering. [Internet] [Masters thesis]. Colorado School of Mines; 2014. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/11124/508.

Council of Science Editors:

Ward L. Tribological and structural properties of titanium nitride and titanium aluminum nitride coatings deposited with modulated pulsed power magnetron sputtering. [Masters Thesis]. Colorado School of Mines; 2014. Available from: http://hdl.handle.net/11124/508

University of Windsor

16. Zhang, Ying. Tribological properties of diamond-like carbon and boron carbide coatings against aluminum: Adhesion & friction at different temperatures and environments.

Degree: MA, Mechanical, Automotive, and Materials Engineering, 2007, University of Windsor

URL: https://scholar.uwindsor.ca/etd/7024

Subjects/Keywords: ADHESION; ALUMINUM; BORON; CARBIDE; CARBON; COATINGS; DIAMOND; DIFFERENT; ENVIRONMENTS; FRICTION; LIKE; PROPERTIES; TEMPERATURES; TRIBOLOGICAL

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zhang, Y. (2007). Tribological properties of diamond-like carbon and boron carbide coatings against aluminum: Adhesion & friction at different temperatures and environments. (Masters Thesis). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/7024

Chicago Manual of Style (16^th Edition):

Zhang, Ying. “Tribological properties of diamond-like carbon and boron carbide coatings against aluminum: Adhesion & friction at different temperatures and environments.” 2007. Masters Thesis, University of Windsor. Accessed February 27, 2021. https://scholar.uwindsor.ca/etd/7024.

MLA Handbook (7^th Edition):

Zhang, Ying. “Tribological properties of diamond-like carbon and boron carbide coatings against aluminum: Adhesion & friction at different temperatures and environments.” 2007. Web. 27 Feb 2021.

Vancouver:

Zhang Y. Tribological properties of diamond-like carbon and boron carbide coatings against aluminum: Adhesion & friction at different temperatures and environments. [Internet] [Masters thesis]. University of Windsor; 2007. [cited 2021 Feb 27]. Available from: https://scholar.uwindsor.ca/etd/7024.

Council of Science Editors:

Zhang Y. Tribological properties of diamond-like carbon and boron carbide coatings against aluminum: Adhesion & friction at different temperatures and environments. [Masters Thesis]. University of Windsor; 2007. Available from: https://scholar.uwindsor.ca/etd/7024

University of New South Wales

17. Li, Ann. Effect of chromium on the microstructure and mechanical properties of amorphous carbon coatings.

Degree: Materials Science & Engineering, 2014, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/54857 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:36061/SOURCE02?view=true

► Amorphous carbon (a-C) films, known for exhibiting an attractive combination of mechanical and physical properties, have been extensively studied. However, the inherent residual stresses affecting… (more)

▼ Amorphous carbon (a-C) films, known for exhibiting an attractive combination of mechanical and physical properties, have been extensively studied. However, the inherent residual stresses affecting their adhesion to substrates often prevent the growth of thicker films and limit the usage of carbon films. Carbide forming metals such as W, Ti, Cr and Al, when incorporated into the carbon network, can help to stabilise the film structure, reduce compressive residual stresses and improve performance. This thesis focuses on the microstructure, composition, and mechanical property characterization under contact loading of amorphous carbon based films containing chromium. The films were fabricated using an unbalanced magnetron sputtering deposition system, with four C and two Cr targets and Ar gas. M2 steel, with two different hardness values (Rockwell 20 and 60), was used for the substrate, with roughly half of samples deposited on each substrate type. The Cr concentration in the films of the samples (from 0% up to ~48at.%) was controlled by varying the current (up to 3A) on the Cr targets. The microstructure and composition of the carbon were characterised by transmission electron microscopy (TEM), energy-dispersive x-ray spectrometer (EDS), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. The hardness and elastic modulus of the coatings were analysed with nanoindentation tests using both a Hysitron Triboscope and a UMIS 2000 nanoindentation system. The latter indenter was used to study the deformation behaviour of the coating-substrate composites, with a maximum applied load up to 500mN. The indented areas were cross-sectioned and examined using a focused ion beam microscope (FIB). Raman and XPS analysis suggested that all the films had a low sp3/sp2 ratio. The results showed that both pure a-C, and carbon films with very low Cr contents, exhibited the highest hardness and elastic modulus, while a-C with medium Cr content (~16 at.%) were found to have the lowest hardness and modulus values. Incorporation of more Cr results in, possibly, the presence of chromium carbide phase and led to an increase in hardness compared to the medium-Cr samples. Films deposited on the softer substrate exhibited significant cracking on contact loading compared to the coatings on the harder substrates.This thesis focuses on the microstructure, composition, and mechanical property characterization under contact loading of amorphous carbon based films containing chromium. The films were fabricated using an unbalanced magnetron sputtering deposition system, with four C and two Cr targets and Ar gas. M2 steel, with two different hardness values (Rockwell 20 and 60), was used for the substrate, with roughly half of samples deposited on each substrate type. The Cr concentration in the films of the samples (from 0% up to ~48at.%) was controlled by varying the current (up to 3A) on the Cr targets. The microstructure and composition of the carbon were characterised by transmission electron microscopy (TEM), energy-dispersive x-ray… Advisors/Committee Members: Munroe, Paul, Materials Science & Engineering, Faculty of Science, UNSW.

Subjects/Keywords: Amorphous carbon coatings; Chromium; Microstructure

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Li, A. (2014). Effect of chromium on the microstructure and mechanical properties of amorphous carbon coatings. (Masters Thesis). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/54857 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:36061/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Li, Ann. “Effect of chromium on the microstructure and mechanical properties of amorphous carbon coatings.” 2014. Masters Thesis, University of New South Wales. Accessed February 27, 2021. http://handle.unsw.edu.au/1959.4/54857 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:36061/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Li, Ann. “Effect of chromium on the microstructure and mechanical properties of amorphous carbon coatings.” 2014. Web. 27 Feb 2021.

Vancouver:

Li A. Effect of chromium on the microstructure and mechanical properties of amorphous carbon coatings. [Internet] [Masters thesis]. University of New South Wales; 2014. [cited 2021 Feb 27]. Available from: http://handle.unsw.edu.au/1959.4/54857 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:36061/SOURCE02?view=true.

Council of Science Editors:

Li A. Effect of chromium on the microstructure and mechanical properties of amorphous carbon coatings. [Masters Thesis]. University of New South Wales; 2014. Available from: http://handle.unsw.edu.au/1959.4/54857 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:36061/SOURCE02?view=true

18. Σαράφογλου, Χαρίκλεια. Μεταλλουργικός και τριβολογικός χαρακτηρισμός μεταλλικών και κεραμικών επιστρωμάτων που παράγονται με χρήση προηγμένων τεχνικών θερμικ...

Degree: 2012, National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)

URL: http://hdl.handle.net/10442/hedi/28196

► The present thesis deals with the microstructural characteristics and tribological properties of metallic and ceramic thermal sprayed coatings. These properties as well as the overall… (more)

Subjects/Keywords: Θερμικός ψεκασμός; Συμπεριφορά σε τριβή-φθορά; Μεταλλικά επιστρώματα; Κεραμικά επιστρώματα; Επίδραση παραγόντων ψεκασμού; Thermal spraying; Microstructural study; Tribological behaviour; Ceramic coatings; Metallic coatings; Spraying parameters effect

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Σαράφογλου, . �. (2012). Μεταλλουργικός και τριβολογικός χαρακτηρισμός μεταλλικών και κεραμικών επιστρωμάτων που παράγονται με χρήση προηγμένων τεχνικών θερμικ... (Thesis). National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ). Retrieved from http://hdl.handle.net/10442/hedi/28196

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Σαράφογλου, Χαρίκλεια. “Μεταλλουργικός και τριβολογικός χαρακτηρισμός μεταλλικών και κεραμικών επιστρωμάτων που παράγονται με χρήση προηγμένων τεχνικών θερμικ...” 2012. Thesis, National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ). Accessed February 27, 2021. http://hdl.handle.net/10442/hedi/28196.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Σαράφογλου, Χαρίκλεια. “Μεταλλουργικός και τριβολογικός χαρακτηρισμός μεταλλικών και κεραμικών επιστρωμάτων που παράγονται με χρήση προηγμένων τεχνικών θερμικ...” 2012. Web. 27 Feb 2021.

Vancouver:

Σαράφογλου �. Μεταλλουργικός και τριβολογικός χαρακτηρισμός μεταλλικών και κεραμικών επιστρωμάτων που παράγονται με χρήση προηγμένων τεχνικών θερμικ... [Internet] [Thesis]. National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ); 2012. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10442/hedi/28196.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Σαράφογλου �. Μεταλλουργικός και τριβολογικός χαρακτηρισμός μεταλλικών και κεραμικών επιστρωμάτων που παράγονται με χρήση προηγμένων τεχνικών θερμικ... [Thesis]. National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ); 2012. Available from: http://hdl.handle.net/10442/hedi/28196

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Zambia

19. Simpemba, Prospery C. Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films .

Degree: 2012, University of Zambia

URL: http://hdl.handle.net/123456789/1995

► Metal oxide thin films have been used in thin film solar cells and other solar energy applications for many years. The main concern has been… (more)

▼ Metal oxide thin films have been used in thin film solar cells and other solar energy applications for many years. The main concern has been to improve their physical, electrical and optical properties in order to increase their efficiency and lower their production costs. Zinc oxide doped with aluminium (ZnO:Al) and aluminium oxide doped with zinc (A^CbiZn) thin films have been produced by a spray pyrolysis process onto standard microscope glass slides at different substrate temperatures and for different solution concentrations, spray times and pressure. The main objective was to produce single, double and triple layer thin films and characterized them for their optical, electrical and structural properties. The spectral selectiveness of these oxide thin films and their applicability in producing efficient solar cells has been investigated. Optical measurements in the ultraviolet, visible and near infrared ranges have been performed using the Perkin-Elmer Lambda 19 spectrophotometer. Further optical characterization in the far infrared has been performed using the BX Fourier Transform Infrared (FT-IR) spectrophotometer at the University of Dar es Salaam Solar Energy Research Laboratory. Structural characterization for determination of surface morphology and film thickness has been done using the Atomic Force Microscope and the Tencor Alpha Step IQ Profiler. On the other hand electrical properties have been investigated using the four-point resistance square probe. The transmittance, reflectance and thickness of the thin films as well as the sheet resistance have been experimentally obtained. The solar transmittance of 88 percent has been achieved for Al-doped zinc oxide (ZnO) films whereas 71.94 per cent has been obtained for Zn-doped aluminium oxide (AlaOa). The film thicknesses fall in the range 0.14 - 87.7 um. The films have low reflectance in the order of 10 percent. Peak reflectance of 25 per cent has been recorded for the wavelength range 8-12,0m. The wavelength-dependent refractive index of the films has been evaluated from reflectance and transmittance measurements. In the VIS-NIR, the obtained refractive indices were 1.28 for ZnO, 1.97 for ZnO:Al and 2.0 for A^OsiZn. Features of the film surface microstructure have been analyzed and related to how they affect the general properties of the films. The properties of these thin films have been modeled using the Bruggeman and Maxwell-Garnett effective medium theories obtaining effective values for the permeability constants and using these to calculate the effective values of refractive indices. The film sheet resistance values of 0.75 Q, 9.5 Q and corresponding resistivity values of 9.59 x 10"4Qm and 2.43 x 10~4Q m have been obtained for ZnO:Al, and resistance values of 5.56Q and 12 Q with corresponding resistivity values of 4.47 x 10"4Qm and 11.80 x 10"4Qm have been achieved for A^C^Zn. These film properties have been related to applications in thin film solar cells.

Subjects/Keywords: Thin Films – coatings; Thin Films(metal oxide) – Mechanical properties

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Simpemba, P. C. (2012). Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films . (Thesis). University of Zambia. Retrieved from http://hdl.handle.net/123456789/1995

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Simpemba, Prospery C. “Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films .” 2012. Thesis, University of Zambia. Accessed February 27, 2021. http://hdl.handle.net/123456789/1995.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Simpemba, Prospery C. “Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films .” 2012. Web. 27 Feb 2021.

Vancouver:

Simpemba PC. Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films . [Internet] [Thesis]. University of Zambia; 2012. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/123456789/1995.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Simpemba PC. Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films . [Thesis]. University of Zambia; 2012. Available from: http://hdl.handle.net/123456789/1995

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

20. Simpemba, Prospery C. Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films.

Degree: 2012, University of Zimbabwe

URL: http://dspace.unza.zm/handle/123456789/1218

► Metal oxide thin films have been used in thin film solar cells and other solar energy applications for many years. The main concern has been… (more)

▼ Metal oxide thin films have been used in thin film solar cells and other solar energy applications for many years. The main concern has been to improve their physical, electrical and optical properties in order to increase their efficiency and lower their production costs. Zinc oxide doped with aluminium (ZnO:Al) and aluminium oxide doped with zinc (Al2O3:Zn) thin films have been produced by a spray pyrolysis process onto standard microscope glass slides at different substrate temperatures and for different solution concentrations, spray times and pressure. The main objective was to produce single, double and triple layer thin films and characterized them for their optical, electrical and structural properties. The spectral selectiveness of these oxide thin films and their applicability in producing efficient solar cells has been investigated. Optical measurements in the ultraviolet, visible and near infrared ranges have been performed using the Perkin-Elmer Lambda 19 spectrophotometer. Further optical characterization in the far infrared has been performed using the BX Fourier Transform Infrared (FT-IR) spectrophotometer at the University of Dar es Salaam Solar Energy Research Laboratory. Structural characterization for determination of surface morphology and film thickness has been done using the Atomic Force Microscope and the Tencor Alpha Step IQ Profiler. On the other hand electrical properties have been investigated using the four-point resistance square probe. The transmittance, reflectance and thickness of the thin films as well as the sheet resistance have been experimentally obtained. The solar transmittance of 88 percent has been achieved for Al-doped zinc oxide (ZnO) films whereas 71.94 per cent has been obtained for Zn-doped aluminium oxide (Al2O3). The film thicknesses fall in the range 0.14 - 87.7 μm. The films have low reflectance in the order of 10 percent. Peak reflectance of 25 per cent has been recorded for the wavelength range 8-12 m. The wavelength-dependent refractive index of the films has been evaluated from reflectance and transmittance measurements. In the VIS-NIR, the obtained refractive indices were 1.28 for ZnO, 1.97 for ZnO:Al and 2.0 for Al2O3:Zn. Features of the film surface microstructure have been analyzed and related to how they affect the general properties of the films. The properties of these thin films have been modeled using the Bruggeman and Maxwell-Garnett effective medium theories obtaining effective values for the permeability constants and using these to calculate the effective values of refractive indices. The film sheet resistance values of 0.75 , 9.5 and corresponding resistivity values of 9.59 x 10-4 m and 2.43 x 10-4 m have been obtained for ZnO:Al, and resistance values of 5.56 and 12 with corresponding resistivity values of 4.47 x 10-4 m and 11.80 x 10-4 m have been achieved for Al2O3:Zn. These film properties have been related to applications in thin film solar cells.

Subjects/Keywords: Thin Films – coatings; Thin Films(metal oxide) – Mechanical properties

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Simpemba, P. C. (2012). Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films. (Thesis). University of Zimbabwe. Retrieved from http://dspace.unza.zm/handle/123456789/1218

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Simpemba, Prospery C. “Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films.” 2012. Thesis, University of Zimbabwe. Accessed February 27, 2021. http://dspace.unza.zm/handle/123456789/1218.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Simpemba, Prospery C. “Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films.” 2012. Web. 27 Feb 2021.

Vancouver:

Simpemba PC. Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films. [Internet] [Thesis]. University of Zimbabwe; 2012. [cited 2021 Feb 27]. Available from: http://dspace.unza.zm/handle/123456789/1218.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Simpemba PC. Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films. [Thesis]. University of Zimbabwe; 2012. Available from: http://dspace.unza.zm/handle/123456789/1218

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

21. Simpemba, Prospery C. Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films.

Degree: 2012, University of Zimbabwe

URL: http://dspace.unza.zm/handle/123456789/1281

► Metal oxide thin films have been used in thin film solar cells and other solar energy applications for many years. The main concern has been… (more)

▼ Metal oxide thin films have been used in thin film solar cells and other solar energy applications for many years. The main concern has been to improve their physical, electrical and optical properties in order to increase their efficiency and lower their production costs. Zinc oxide doped with aluminium (ZnO:Al) and aluminium oxide doped with zinc (Al2O3:Zn) thin films have been produced by a spray pyrolysis process onto standard microscope glass slides at different substrate temperatures and for different solution concentrations, spray times and pressure. The main objective was to produce single, double and triple layer thin films and characterized them for their optical, electrical and structural properties. The spectral selectiveness of these oxide thin films and their applicability in producing efficient solar cells has been investigated. Optical measurements in the ultraviolet, visible and near infrared ranges have been performed using the Perkin-Elmer Lambda 19 spectrophotometer. Further optical characterization in the far infrared has been performed using the BX Fourier Transform Infrared (FT-IR) spectrophotometer at the University of Dar es Salaam Solar Energy Research Laboratory. Structural characterization for determination of surface morphology and film thickness has been done using the Atomic Force Microscope and the Tencor Alpha Step IQ Profiler. On the other hand electrical properties have been investigated using the four-point resistance square probe. The transmittance, reflectance and thickness of the thin films as well as the sheet resistance have been experimentally obtained. The solar transmittance of 88 percent has been achieved for Al-doped zinc oxide (ZnO) films whereas 71.94 per cent has been obtained for Zn-doped aluminium oxide (Al2O3). The film thicknesses fall in the range 0.14 - 87.7 μm. The films have low reflectance in the order of 10 percent. Peak reflectance of 25 per cent has been recorded for the wavelength range 8-12 m. The wavelength-dependent refractive index of the films has been evaluated from reflectance and transmittance measurements. In the VIS-NIR, the obtained refractive indices were 1.28 for ZnO, 1.97 for ZnO:Al and 2.0 for Al2O3:Zn. Features of the film surface microstructure have been analyzed and related to how they affect the general properties of the films. The properties of these thin films have been modeled using the Bruggeman and Maxwell-Garnett effective medium theories obtaining effective values for the permeability constants and using these to calculate the effective values of refractive indices. The film sheet resistance values of 0.75 , 9.5 and corresponding resistivity values of 9.59 x 10-4 m and 2.43 x 10-4 m have been obtained for ZnO:Al, and resistance values of 5.56 and 12 with corresponding resistivity values of 4.47 x 10-4 m and 11.80 x 10-4 m have been achieved for Al2O3:Zn. These film properties have been related to applications in thin film solar cells.

Subjects/Keywords: Thin Films – coatings; Thin Films(metal oxide) – Mechanical properties

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Simpemba, P. C. (2012). Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films. (Thesis). University of Zimbabwe. Retrieved from http://dspace.unza.zm/handle/123456789/1281

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Simpemba, Prospery C. “Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films.” 2012. Thesis, University of Zimbabwe. Accessed February 27, 2021. http://dspace.unza.zm/handle/123456789/1281.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Simpemba, Prospery C. “Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films.” 2012. Web. 27 Feb 2021.

Vancouver:

Simpemba PC. Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films. [Internet] [Thesis]. University of Zimbabwe; 2012. [cited 2021 Feb 27]. Available from: http://dspace.unza.zm/handle/123456789/1281.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Simpemba PC. Growth and Characterisation of Spray Pyrolytic Doped Zinc and Aluminium Oxide Spectral-Selective thin Films. [Thesis]. University of Zimbabwe; 2012. Available from: http://dspace.unza.zm/handle/123456789/1281

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

22. Noferesti, Amir Darabi. Microstructural Characteristics and Mechanical Behavior of Anticorrosive Al-Zn Thermal Spray Coatings Deposited by Wire Arc Spraying and Cold Spraying Techniques.

Degree: 2019, North Dakota State University

URL: http://hdl.handle.net/10365/31645

► Mechanical properties of thermal spray deposited coatings are highly influenced by their microstructural characteristics. The objective of this investigation is to evaluate the mechanical properties… (more)

Subjects/Keywords: Al-Zn; finite element; mechanical properties; microstructural features; thermal spray coatings

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APA (6^th Edition):

Noferesti, A. D. (2019). Microstructural Characteristics and Mechanical Behavior of Anticorrosive Al-Zn Thermal Spray Coatings Deposited by Wire Arc Spraying and Cold Spraying Techniques. (Thesis). North Dakota State University. Retrieved from http://hdl.handle.net/10365/31645

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Noferesti, Amir Darabi. “Microstructural Characteristics and Mechanical Behavior of Anticorrosive Al-Zn Thermal Spray Coatings Deposited by Wire Arc Spraying and Cold Spraying Techniques.” 2019. Thesis, North Dakota State University. Accessed February 27, 2021. http://hdl.handle.net/10365/31645.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Noferesti, Amir Darabi. “Microstructural Characteristics and Mechanical Behavior of Anticorrosive Al-Zn Thermal Spray Coatings Deposited by Wire Arc Spraying and Cold Spraying Techniques.” 2019. Web. 27 Feb 2021.

Vancouver:

Noferesti AD. Microstructural Characteristics and Mechanical Behavior of Anticorrosive Al-Zn Thermal Spray Coatings Deposited by Wire Arc Spraying and Cold Spraying Techniques. [Internet] [Thesis]. North Dakota State University; 2019. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10365/31645.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Noferesti AD. Microstructural Characteristics and Mechanical Behavior of Anticorrosive Al-Zn Thermal Spray Coatings Deposited by Wire Arc Spraying and Cold Spraying Techniques. [Thesis]. North Dakota State University; 2019. Available from: http://hdl.handle.net/10365/31645

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

23. Rueda Ruiz, M. (author). Mechanical testing and quantification of crack healing in self-healing yttria-stabilized zirconia thermal barrier coating.

Degree: 2016, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:acd7365a-1001-43ae-b6c0-2b7e74dc3dbe

►

Thermal barrier coatings (TBC) are often applied to hot components of modern turbojet engines. These coatings increase the performance of the engine and enhance the… (more)

▼

Thermal barrier coatings (TBC) are often applied to hot components of modern turbojet engines. These coatings increase the performance of the engine and enhance the lifetime of its structural components. Thus, improving the TBC lifetime is related with a reduction of maintenance costs and increased reliability. As an alternative to conventional design approaches, a self-healing mechanism is implemented in the TBC material. To this end, alumina encapsulated MoSi2B-based YSZ composites were prepared via spark plasma sintering. First, a qualitative study of the crack healing behaviour was conducted using an indentation technique. In most of the cases, indentation cracks fracture the particles in line with the crack path. Then, a sufficient particle-matrix interface strength exists. Upon oxidation at 1100 ºC for 1, 4 and 16 h in laboratory air, the fractured particles oxidize and form glassy SiO2, that filled the crack. It has been observed that the SiO2 further reacts with the YSZ matrix and forms a well-bonded healing product, ZrSiO4. As a second step, a quantitative characterization of the recovery of load bearing capability for the self-healing TBC was performed. For this purpose, two novel mechanical test methods were developed to create a controlled crack that can be stopped, healed and re-tested. This enables to measure in the same specimen the virginal, residual and healed strength of the material. These two set-ups are the Brazilian Disc (BD) test and the Wedge-Loaded Double Cantilever Beam (WL-DCB) test. The application of both the WL-DCB and BD test to the self-healing TBC material was successful because the growth of a crack could be controlled in the brittle material. The WL-DCB test is potentially more suitable for quantification of recovery of load bearing capability. The BD test is more straightforward for determining strength of the material. Application of this BD test to benchmark YSZ material gave a strength value of around 550 MPa, which is accordance with previously reported values for this material. Following the successful achievement of controlled cracking with both methods, the quantification of load bearing capability in the healed material remains an issue of future work.

Aerospace Engineering

Aerospace Structures and Materials

Advisors/Committee Members: Sloof, W.G. (mentor), Van der Zwaag, S. (mentor).

Subjects/Keywords: self-healing; thermal barrier coatings; mechanical characterization; strength and fracture testing; crack healing

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APA (6^th Edition):

Rueda Ruiz, M. (. (2016). Mechanical testing and quantification of crack healing in self-healing yttria-stabilized zirconia thermal barrier coating. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:acd7365a-1001-43ae-b6c0-2b7e74dc3dbe

Chicago Manual of Style (16^th Edition):

Rueda Ruiz, M (author). “Mechanical testing and quantification of crack healing in self-healing yttria-stabilized zirconia thermal barrier coating.” 2016. Masters Thesis, Delft University of Technology. Accessed February 27, 2021. http://resolver.tudelft.nl/uuid:acd7365a-1001-43ae-b6c0-2b7e74dc3dbe.

MLA Handbook (7^th Edition):

Rueda Ruiz, M (author). “Mechanical testing and quantification of crack healing in self-healing yttria-stabilized zirconia thermal barrier coating.” 2016. Web. 27 Feb 2021.

Vancouver:

Rueda Ruiz M(. Mechanical testing and quantification of crack healing in self-healing yttria-stabilized zirconia thermal barrier coating. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2021 Feb 27]. Available from: http://resolver.tudelft.nl/uuid:acd7365a-1001-43ae-b6c0-2b7e74dc3dbe.

Council of Science Editors:

Rueda Ruiz M(. Mechanical testing and quantification of crack healing in self-healing yttria-stabilized zirconia thermal barrier coating. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:acd7365a-1001-43ae-b6c0-2b7e74dc3dbe

University of Manchester

24. Eaves, Elizabeth. Soft-soft nanocomposite coating materials produced by emulsion polymerisation.

Degree: PhD, 2015, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/softsoft-nanocomposite-coating-materials-produced-by-emulsion-polymerisation(2ccdd0fe-22d3-4dea-bf0c-ecf7ef8c7da2).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.809284

► This thesis reports on the challenge of applying an innovative 'soft-soft nanocomposite' design strategy to establish synthesis parameters that affect the performance of coatings based… (more)

▼ This thesis reports on the challenge of applying an innovative 'soft-soft nanocomposite' design strategy to establish synthesis parameters that affect the performance of coatings based upon water-borne latexes, which is driven by the environmental and legislative need to develop feasible alternatives to solvent-borne coatings. A framework emulsion polymerisation formulation to synthesise core-shell latexes with (poly[(butyl acrylate)-co-(butyl methacrylate)]) core and (poly[(butyl acrylate)-co-(butyl methacrylate)-co-(diacetone acrylamide)]) shell copolymer phases in a controlled manner was established, with high monomer conversions and approximately constant particle numbers. Retention of particle morphology in the films was confirmed using atomic force microscopy (AFM). The effect of adding adipic acid dihydrazide to the latex post-polymerisation to facilitate crosslinking of the shell phase during film formation was found to have a significant effect on the stress-strain properties of latex films. A core:shell mass ratio of 80:20 was found to be optimum in all crosslinked systems tested. Increasing the amount of crosslinking in the shell phase of the particles was found to have an effect on the large strain tensile properties of films, leading to strain hardening with reduced extension to break and higher failure stresses at higher crosslinker levels. Core phase copolymer Tg had a very significant effect upon the low strain mechanical properties, with Young's modulus values of 5-180 MPa being accessible in the range of core Tg¬s from 5-25 °C, although little difference in mechanical behaviour was seen when varying the shell phase Tg from 5-15 °C. Adding 2 wt% methacrylic acid (MAA) to the shell phase copolymer gave an additional improvement in the low strain tensile region, with a Young's modulus of 425 MPa being realised. However, it was found that additional amounts of MAA (up to 5 wt% in the shell phase) were deterious to film properties, with low Young's modulus and poor extensibility. This was interpreted as being due to an increased concentration of ionomeric crosslinks restricting interparticle chain diffusion and keto-hydrazide crosslinking. Studies to evaluate the mechanical performance of soft-soft nanocomposite films compared to binder latexes used in commercial products were favourable, and showed that a high level of versatility with regards to mechanical properties is possible.

Subjects/Keywords: 668.9; Film formation; Coatings; Polymer; Nanocomposite

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APA (6^th Edition):

Eaves, E. (2015). Soft-soft nanocomposite coating materials produced by emulsion polymerisation. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/softsoft-nanocomposite-coating-materials-produced-by-emulsion-polymerisation(2ccdd0fe-22d3-4dea-bf0c-ecf7ef8c7da2).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.809284

Chicago Manual of Style (16^th Edition):

Eaves, Elizabeth. “Soft-soft nanocomposite coating materials produced by emulsion polymerisation.” 2015. Doctoral Dissertation, University of Manchester. Accessed February 27, 2021. https://www.research.manchester.ac.uk/portal/en/theses/softsoft-nanocomposite-coating-materials-produced-by-emulsion-polymerisation(2ccdd0fe-22d3-4dea-bf0c-ecf7ef8c7da2).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.809284.

MLA Handbook (7^th Edition):

Eaves, Elizabeth. “Soft-soft nanocomposite coating materials produced by emulsion polymerisation.” 2015. Web. 27 Feb 2021.

Vancouver:

Eaves E. Soft-soft nanocomposite coating materials produced by emulsion polymerisation. [Internet] [Doctoral dissertation]. University of Manchester; 2015. [cited 2021 Feb 27]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/softsoft-nanocomposite-coating-materials-produced-by-emulsion-polymerisation(2ccdd0fe-22d3-4dea-bf0c-ecf7ef8c7da2).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.809284.

Council of Science Editors:

Eaves E. Soft-soft nanocomposite coating materials produced by emulsion polymerisation. [Doctoral Dissertation]. University of Manchester; 2015. Available from: https://www.research.manchester.ac.uk/portal/en/theses/softsoft-nanocomposite-coating-materials-produced-by-emulsion-polymerisation(2ccdd0fe-22d3-4dea-bf0c-ecf7ef8c7da2).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.809284

Delft University of Technology

25. Murali, Sneha (author). Micromechanical Modelling of Fracture Behaviour in Self-Healing Thermal Barrier Coatings.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:eaa0262e-1fb6-4439-b40d-9840f04e9131

► Crack initiation and propagation in composite structures exists as a prominent knowledge gap in computational fracture mechanics. Prior to the development and implementation of fracture… (more)

Subjects/Keywords: fracture behaviour; Self-healing; coatings

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APA (6^th Edition):

Murali, S. (. (2017). Micromechanical Modelling of Fracture Behaviour in Self-Healing Thermal Barrier Coatings. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:eaa0262e-1fb6-4439-b40d-9840f04e9131

Chicago Manual of Style (16^th Edition):

Murali, Sneha (author). “Micromechanical Modelling of Fracture Behaviour in Self-Healing Thermal Barrier Coatings.” 2017. Masters Thesis, Delft University of Technology. Accessed February 27, 2021. http://resolver.tudelft.nl/uuid:eaa0262e-1fb6-4439-b40d-9840f04e9131.

MLA Handbook (7^th Edition):

Murali, Sneha (author). “Micromechanical Modelling of Fracture Behaviour in Self-Healing Thermal Barrier Coatings.” 2017. Web. 27 Feb 2021.

Vancouver:

Murali S(. Micromechanical Modelling of Fracture Behaviour in Self-Healing Thermal Barrier Coatings. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Feb 27]. Available from: http://resolver.tudelft.nl/uuid:eaa0262e-1fb6-4439-b40d-9840f04e9131.

Council of Science Editors:

Murali S(. Micromechanical Modelling of Fracture Behaviour in Self-Healing Thermal Barrier Coatings. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:eaa0262e-1fb6-4439-b40d-9840f04e9131

University of Windsor

26. Abou Gharam, Ahmed. Tribological behaviour of H- and W-DLC coatings: Effects of environment and temperature on adhesion.

Degree: PhD, Mechanical, Automotive, and Materials Engineering, 2014, University of Windsor

URL: http://scholar.uwindsor.ca/etd/5058

► The objective of this study was to gain insight into the friction, aluminum adhesion, and wear mechanisms of diamond-like carbon (DLC) coatings, and to… (more)

▼ The objective of this study was to gain insight into the friction, aluminum adhesion, and wear mechanisms of diamond-like carbon (DLC) coatings, and to provide guidelines for coating design and development. Mechanisms that control the tribological behaviour of DLC coatings and the effects of dopants (i.e. hydrogen (H-DLC), and tungsten (W-DLC)) against aluminum alloys were investigated under various environments and test temperatures. The effects of temperature and an oxygen-rich environment on dopant-free DLC, H- DLC, and W- DLC were investigated. Experimental analyses of dopant-free DLC showed that, when it was tested in an atmosphere consisting of 50% oxygen and 45% moisture, a high COF of 0.6 observed during the running-in against aluminum was eliminated compared to environment without moisture. At elevated temperatures, presence of hydrogen reduced the COF of H-DLC (e.g., to 0.06 at 200 °C). W-DLC coatings provided a low COF of 0.18 and minimized aluminum adhesion at temperatures ranging between 400 °C and 500 °C, which was attributed to the formation of a tungsten oxide film. Additionally, DLC coatings were found to generate a low COF at subzero temperatures (-196 °C), with W-DLC and H-DLC generating a COF of 0.18. The work of adhesion (W ad ) was determined using a nano-indentation pull-off force method. In this way, insight was gained into the nature of atomic interactions contributing to tribological mechanisms at elevated temperatures. The results showed that the adhesion of the diamond tip against all four samples tested (H-DLC, dopant-free DLC, W-DLC, and aluminum) decreased with temperature. At 25 °C, no aluminum adhesion was observed on the diamond tip, due to OH passivation of the diamond surface in agreement with the low COF of 0.12 for the dopant-free DLC coating. The elimination of meniscus forces due to adsorbed water molecules on the sample surface was identified as an important factor contributing to the adhesion at room temperature. The results also confirmed that the hydrogen in the H-DLC mitigated interatomic interactions at the surface and reduced Wad to as low as 0.01 J/m 2 at 200 °C. At 25 °C, there was no aluminum adhesion observed on the diamond tip, due to OH passivation of the diamond surface in agreement with the low COF of 0.12 for the dopant-free DLC coating. Advisors/Committee Members: Alpas, Ahmet.

Subjects/Keywords: Applied sciences; Carbon coatings; Adhesion; Diamond like carbon; Friction; Wear; Engineering; Mechanical Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Abou Gharam, A. (2014). Tribological behaviour of H- and W-DLC coatings: Effects of environment and temperature on adhesion. (Doctoral Dissertation). University of Windsor. Retrieved from http://scholar.uwindsor.ca/etd/5058

Chicago Manual of Style (16^th Edition):

Abou Gharam, Ahmed. “Tribological behaviour of H- and W-DLC coatings: Effects of environment and temperature on adhesion.” 2014. Doctoral Dissertation, University of Windsor. Accessed February 27, 2021. http://scholar.uwindsor.ca/etd/5058.

MLA Handbook (7^th Edition):

Abou Gharam, Ahmed. “Tribological behaviour of H- and W-DLC coatings: Effects of environment and temperature on adhesion.” 2014. Web. 27 Feb 2021.

Vancouver:

Abou Gharam A. Tribological behaviour of H- and W-DLC coatings: Effects of environment and temperature on adhesion. [Internet] [Doctoral dissertation]. University of Windsor; 2014. [cited 2021 Feb 27]. Available from: http://scholar.uwindsor.ca/etd/5058.

Council of Science Editors:

Abou Gharam A. Tribological behaviour of H- and W-DLC coatings: Effects of environment and temperature on adhesion. [Doctoral Dissertation]. University of Windsor; 2014. Available from: http://scholar.uwindsor.ca/etd/5058

University of Akron

27. Appleby, Matthew P. High Temperature Damage Characterization Of Ceramic Composites And Protective Coatings.

Degree: PhD, Mechanical Engineering, 2016, University of Akron

URL: http://rave.ohiolink.edu/etdc/view?acc_num=akron1461932405

► Novel high-temperature experiments were conducted in ordered to address some of the most critical life-limiting issues facing woven melt-infiltrated, silicon carbide (SiC) fiber-reinforced SiC ceramic… (more)

▼ Novel high-temperature experiments were conducted in ordered to address some of the most critical life-limiting issues facing woven melt-infiltrated, silicon carbide (SiC) fiber-reinforced SiC ceramic matrix composites (CMCs) as well as protective thermal and environmental barrier coatings (T/EBC). Heating of specimens was achieved using laser-based approaches that simulate the high heat-flux thermal gradient environments that these materials will be subjected to in service. Specialized non-destructive evaluation (NDE) and inspection techniques were developed to investigate damage modes and material response. First, in order to examine the capabilities of utilizing the emerging technique of electrical resistance (ER) measurement for use in high temperature mechanical testing in SiC/SiC CMCs, the temperature dependent ER response of several systems was determined. A model was developed to establish the contribution to overall ER from the individual composite constituents and applied thermal gradient. Then, elevated temperature tensile tests were performed to characterize the damage of composite materials to localized stress concentrations. Further experiments were done to assess the differences in damage mechanisms and retained tensile strength properties of uncoated SiC/SiC CMCs and EBC-CMC systems after prolonged exposure to high pressure, high velocity water vapor containing environments. Differences in damage modes were described using ER monitoring and post-test inspection. Localized strain fields were measured using a novel digital image correlation (DIC) technique and stress-dependent matrix crack accumulation was monitored using in-situ modal acoustic emission (AE). Coupled AE and thermography measurements were also used to describe failure of protective ceramic coatings due to the life-limiting case of thermal cyclic loading. Due to the complex nature of T/EBC failure, the decrease in coating life and durability due to thermal stress concentrations and degradation via molten calcium-magnesium-aluminosilicate (CMAS) infiltration was also examined. Finally, the use of ER measurements for damage characterization was extended to the complex case of creep and stress-rupture of damaged and undamaged composites as well as the dramatic increase in stress-rupture life to SiC/SiC CMCs from environmental barrier coatings. Post-test microscopy was performed to further explain differences in material response and damage morphology. Advisors/Committee Members: Morscher, Gregory (Advisor).

Subjects/Keywords: Mechanical Engineering; ceramic matrix composites; environmental barrier coatings, thermal barrier coatings; non-destructive evaluation; electrical resistance; acoustic emission; digital image correlation

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APA (6^th Edition):

Appleby, M. P. (2016). High Temperature Damage Characterization Of Ceramic Composites And Protective Coatings. (Doctoral Dissertation). University of Akron. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=akron1461932405

Chicago Manual of Style (16^th Edition):

Appleby, Matthew P. “High Temperature Damage Characterization Of Ceramic Composites And Protective Coatings.” 2016. Doctoral Dissertation, University of Akron. Accessed February 27, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=akron1461932405.

MLA Handbook (7^th Edition):

Appleby, Matthew P. “High Temperature Damage Characterization Of Ceramic Composites And Protective Coatings.” 2016. Web. 27 Feb 2021.

Vancouver:

Appleby MP. High Temperature Damage Characterization Of Ceramic Composites And Protective Coatings. [Internet] [Doctoral dissertation]. University of Akron; 2016. [cited 2021 Feb 27]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=akron1461932405.

Council of Science Editors:

Appleby MP. High Temperature Damage Characterization Of Ceramic Composites And Protective Coatings. [Doctoral Dissertation]. University of Akron; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=akron1461932405

Delft University of Technology

28. Guerriero, G.L. Liquid crystalline thermosetting polymers as protective coatings for aerospace.

Degree: 2012, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:e15e7cec-4355-43f0-9137-0b4608530eb4 ; urn:NBN:nl:ui:24-uuid:e15e7cec-4355-43f0-9137-0b4608530eb4 ; urn:NBN:nl:ui:24-uuid:e15e7cec-4355-43f0-9137-0b4608530eb4 ; http://resolver.tudelft.nl/uuid:e15e7cec-4355-43f0-9137-0b4608530eb4

► Environmental regulations are driving the development of new aerospace coating systems, mainly to eliminate chromates and reduce volatile organic compound (VOC) emissions. Among the various… (more)

Subjects/Keywords: environmental resistance; atmospheric plasma spraying; liquid crystalline polymers; thermosets; coatings; mechanical properties

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APA (6^th Edition):

Guerriero, G. L. (2012). Liquid crystalline thermosetting polymers as protective coatings for aerospace. (Doctoral Dissertation). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:e15e7cec-4355-43f0-9137-0b4608530eb4 ; urn:NBN:nl:ui:24-uuid:e15e7cec-4355-43f0-9137-0b4608530eb4 ; urn:NBN:nl:ui:24-uuid:e15e7cec-4355-43f0-9137-0b4608530eb4 ; http://resolver.tudelft.nl/uuid:e15e7cec-4355-43f0-9137-0b4608530eb4

Chicago Manual of Style (16^th Edition):

Guerriero, G L. “Liquid crystalline thermosetting polymers as protective coatings for aerospace.” 2012. Doctoral Dissertation, Delft University of Technology. Accessed February 27, 2021. http://resolver.tudelft.nl/uuid:e15e7cec-4355-43f0-9137-0b4608530eb4 ; urn:NBN:nl:ui:24-uuid:e15e7cec-4355-43f0-9137-0b4608530eb4 ; urn:NBN:nl:ui:24-uuid:e15e7cec-4355-43f0-9137-0b4608530eb4 ; http://resolver.tudelft.nl/uuid:e15e7cec-4355-43f0-9137-0b4608530eb4.

MLA Handbook (7^th Edition):

Guerriero, G L. “Liquid crystalline thermosetting polymers as protective coatings for aerospace.” 2012. Web. 27 Feb 2021.

Vancouver:

Guerriero GL. Liquid crystalline thermosetting polymers as protective coatings for aerospace. [Internet] [Doctoral dissertation]. Delft University of Technology; 2012. [cited 2021 Feb 27]. Available from: http://resolver.tudelft.nl/uuid:e15e7cec-4355-43f0-9137-0b4608530eb4 ; urn:NBN:nl:ui:24-uuid:e15e7cec-4355-43f0-9137-0b4608530eb4 ; urn:NBN:nl:ui:24-uuid:e15e7cec-4355-43f0-9137-0b4608530eb4 ; http://resolver.tudelft.nl/uuid:e15e7cec-4355-43f0-9137-0b4608530eb4.

Council of Science Editors:

Guerriero GL. Liquid crystalline thermosetting polymers as protective coatings for aerospace. [Doctoral Dissertation]. Delft University of Technology; 2012. Available from: http://resolver.tudelft.nl/uuid:e15e7cec-4355-43f0-9137-0b4608530eb4 ; urn:NBN:nl:ui:24-uuid:e15e7cec-4355-43f0-9137-0b4608530eb4 ; urn:NBN:nl:ui:24-uuid:e15e7cec-4355-43f0-9137-0b4608530eb4 ; http://resolver.tudelft.nl/uuid:e15e7cec-4355-43f0-9137-0b4608530eb4

29. Mohammed, Yunus. Investigations on the properties of industrial ceramic coatings and characterization; -.

Degree: Mechanical Engineering, 2014, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/26634

►

Thermally sprayed ceramic coatings are more generally used on industrial components for meeting their functional requirements like high strength at elevated temperatures resistance to chemical… (more)

Subjects/Keywords: Ceramic coatings; Mechanical engineering; Mechanical properties; Plasma spraying; Precision machining; Velocity oxy fuel

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APA (6^th Edition):

Mohammed, Y. (2014). Investigations on the properties of industrial ceramic coatings and characterization; -. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/26634

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mohammed, Yunus. “Investigations on the properties of industrial ceramic coatings and characterization; -.” 2014. Thesis, Anna University. Accessed February 27, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/26634.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mohammed, Yunus. “Investigations on the properties of industrial ceramic coatings and characterization; -.” 2014. Web. 27 Feb 2021.

Vancouver:

Mohammed Y. Investigations on the properties of industrial ceramic coatings and characterization; -. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Feb 27]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/26634.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mohammed Y. Investigations on the properties of industrial ceramic coatings and characterization; -. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/26634

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of New Mexico

30. Hutchins, Karen. Measurement of Interfacial Adhesion in Glass-Epoxy Systems Using the Indentation Method.

Degree: Mechanical Engineering, 2015, University of New Mexico

URL: http://hdl.handle.net/1928/30342

► The adhesion of coatings often controls the performance of the substrate-coating system. Certain engineering applications require an epoxy coating on a brittle substrate to protect… (more)

Subjects/Keywords: Adhesion; Indentation; Glass; Epoxy; Interfaces; Bonding; Coatings

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APA (6^th Edition):

Hutchins, K. (2015). Measurement of Interfacial Adhesion in Glass-Epoxy Systems Using the Indentation Method. (Masters Thesis). University of New Mexico. Retrieved from http://hdl.handle.net/1928/30342

Chicago Manual of Style (16^th Edition):

Hutchins, Karen. “Measurement of Interfacial Adhesion in Glass-Epoxy Systems Using the Indentation Method.” 2015. Masters Thesis, University of New Mexico. Accessed February 27, 2021. http://hdl.handle.net/1928/30342.

MLA Handbook (7^th Edition):

Hutchins, Karen. “Measurement of Interfacial Adhesion in Glass-Epoxy Systems Using the Indentation Method.” 2015. Web. 27 Feb 2021.

Vancouver:

Hutchins K. Measurement of Interfacial Adhesion in Glass-Epoxy Systems Using the Indentation Method. [Internet] [Masters thesis]. University of New Mexico; 2015. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/1928/30342.

Council of Science Editors:

Hutchins K. Measurement of Interfacial Adhesion in Glass-Epoxy Systems Using the Indentation Method. [Masters Thesis]. University of New Mexico; 2015. Available from: http://hdl.handle.net/1928/30342

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