subject:(Alloy Composition)

Univerzitet u Beogradu

1. Lačnjevac, Uroš, 1978-. Elektrohemijsko taloženje i karakterizacija prahova metala i legura trijade gvožđa i prahova legure nikla sa molibdenom.

Degree: 2014, Univerzitet u Beogradu

URL: https://fedorabg.bg.ac.rs/fedora/get/o:6700/bdef:Content/get

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Elektrohemija / Electrochemistry

Elektrohemijsko taloženje prahova Fe-Ni legura iz rastvora amonijumhloridnog i natrijum-sulfatnog pomoćnog elektrolita različitih odnosa koncentracija Ni/Fe jona i prahova Mo-Ni-O legura iz… (more)

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Elektrohemija / Electrochemistry

Elektrohemijsko taloženje prahova Fe-Ni legura iz rastvora amonijumhloridnog i natrijum-sulfatnog pomoćnog elektrolita različitih odnosa koncentracija Ni/Fe jona i prahova Mo-Ni-O legura iz rastvora amonijum-hloridnog i amonijumsulfatnog pomoćnog elektrolita različitih odnosa koncentracija Ni/Mo jona ispitivano je snimanjem polarizacionih krivih. Sve polarizacione krive su imale isti oblik okarakterisan dvema prevojnim tačkama. Prva prevojna tačka odgovarala je početku taloženja legure uz nagli porast gustine struje usled paralelnog izdvajanja vodonika, dok je druga prevojna tačka odgovarala potencijalu na kome brzina ukupnog procesa na katodi postaje ograničena brzinom formiranja mehurova vodonika. Morfologija, hemijski i fazni sastav istaloženih prahova Fe-Ni i Mo-Ni-O legura ispitivani su pomoću SEM, EDS, XRD, DSC, TGA, AAS, TEM i SAED analize. Ustanovljeno je da morfologija istaloženih prahova Fe-Ni legura zavisi od odnosa koncentracija Ni/Fe jona, kao i od prisustva Fe(III) ili Fe(II) vrsta u rastvoru. Zajednička karakteristika morfologije svih prahova Fe-Ni legura je prisustvo sfernih zrna i šupljina konusnog oblika, koje odgovaraju mestima gde su se formirali mehurovi vodonika. U prahovima istaloženim pri odnosu Ni/Fe = 9/1 iz rastvora oba pomoćna elektrolita uočeni su kristali oblika pagode, koji pripadaju FeNi3 fazi. EDS analiza sastava prahova potvrdila je pojavu anomalnog taloženja Fe i Ni pri svim ispitivanim odnosima koncentracija Ni/Fe jona, pri čemu je anomalan karakter taloženja bio izraženiji u rastvorima Fe(III) soli. Nakon odgrevanja na 400, 600 i 700°C u atmosferi vazduha došlo je do oksidacije prahova i formiranja NiO, NiFe2O4 i Fe2O3 faza, čiji je sadržaj u odgrevanim prahovima zavisio od sastava istaloženih prahova. Ustanovljeno je da NiFe2O4, poznat kao magnetni materijal sa širokim opsegom primene, predstavlja dominantnu fazu u prahu istaloženom pri odnosu Ni/Fe = 1/3 nakon odgrevanja na 600°C. Utvrđeno je da odnos koncentracija Ni/Mo jona utiče na morfologiju i hemijski sastav prahova Mo-Ni-O legura. Morfologija prahova Mo-Ni-O legura okarakterisana je prisustvom dve vrste sfernih aglomerata: aglomerata sa kompaktnom, relativno glatkom površinom i aglomerata sa razvijenom površinom sastavljenom od kristala nanometarskih dimenzija. Rezultati EDS analize ukazali su na prisustvo i do 70 at. % kiseonika u talogu, kao i na nehomogen sastav čestica prahova. Istaloženi prahovi su bili nanokristalni, bez pojave oštrih pikova na difraktogramima. Tokom uzastopnih termičkih tretmana prahova na 300, 400, 500 i 600°C u atmosferi azota došlo je do povećanja dimenzija kristalita sa temperaturom odgrevanja, uz pojavu pikova MoO3 i NiMoO4 faza na difraktogramima već nakon odgrevanja na 300°C. Nakon odgrevanja na 600°C u uzorku praha istaloženog pri odnosu Ni/Mo = 1/0,3 XRD analizom je ustanovljeno da dominira NiMoO4 faza, a v Izvod da je u manjoj meri prisutna i MoNi4 faza. TEM analiza istaloženih prahova je pokazala istovremeno prisustvo amorfnih i kristalnih čestica.…

Advisors/Committee Members: Jović, Vladimir.

Subjects/Keywords: electrodeposition; Fe-Ni alloy powder; Mo-Ni-O alloy powder; morphology; chemical composition; phase composition; annealing

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APA (6^th Edition):

Lačnjevac, Uroš, 1. (2014). Elektrohemijsko taloženje i karakterizacija prahova metala i legura trijade gvožđa i prahova legure nikla sa molibdenom. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:6700/bdef:Content/get

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):

Lačnjevac, Uroš, 1978-. “Elektrohemijsko taloženje i karakterizacija prahova metala i legura trijade gvožđa i prahova legure nikla sa molibdenom.” 2014. Thesis, Univerzitet u Beogradu. Accessed January 23, 2021. https://fedorabg.bg.ac.rs/fedora/get/o:6700/bdef:Content/get.

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

MLA Handbook (7^th Edition):

Lačnjevac, Uroš, 1978-. “Elektrohemijsko taloženje i karakterizacija prahova metala i legura trijade gvožđa i prahova legure nikla sa molibdenom.” 2014. Web. 23 Jan 2021.

Vancouver:

Lačnjevac, Uroš 1. Elektrohemijsko taloženje i karakterizacija prahova metala i legura trijade gvožđa i prahova legure nikla sa molibdenom. [Internet] [Thesis]. Univerzitet u Beogradu; 2014. [cited 2021 Jan 23]. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:6700/bdef:Content/get.

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

Council of Science Editors:

Lačnjevac, Uroš 1. Elektrohemijsko taloženje i karakterizacija prahova metala i legura trijade gvožđa i prahova legure nikla sa molibdenom. [Thesis]. Univerzitet u Beogradu; 2014. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:6700/bdef:Content/get

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

University of New South Wales

2. Chen, Yu. The evolution of B2-ZrCo phase in Zr-Co-Al bulk metallic glasses upon quenching from the melt and subsequent thermal treatment.

Degree: Materials Science & Engineering, 2018, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/61494 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:56107/SOURCE02?view=true

► BMG composites containing B2 phase have shown to possess work-hardening and an enhanced plasticity under tensile loading. To date, studies have focused on as-cast Zr-Co-Al… (more)

▼ BMG composites containing B2 phase have shown to possess work-hardening and an enhanced plasticity under tensile loading. To date, studies have focused on as-cast Zr-Co-Al alloys in terms of alloy composition and indicated that Zr-Co-Al alloys can be fabricated either a fully glassy alloys with a high content of Al or ultrafine-grained alloys with equimolar Zr-Co and low content of Al. Therefore, the focus of this thesis is to investigate formation of the B2-ZrCo phase in a glassy matrix in terms of alloy composition, especially the Co/Zr ratio, upon rapid quenching, through to annealing fully glassy alloys at various temperatures and times, and the effect of heating rate on B2-ZrCo phase formation.Four processing techniques were used to investigate formation of the B2-ZrCo phase. They are: (1) direct rapid quenching of Zr-Co-Al alloys with various Co/Zr ratios and Al contents, including Zr55Co31Al14, Zr54.5Co33.5Al12, Zr53.5Co36.5Al10 and Zr52.5Co37.5Al10 (3 mm in diameter); and (2) annealing of as-cast BMGs Zr56Co28Al16 and Zr55Co31Al14 (3 mm in diameter) to 753 K and 843/853K for various times; and (3) annealing of BMGs Zr56Co28Al16 and Zr55Co31Al14 (3 mm in diameter) and a wedge BMG Zr54.5Co33.5Al12 (thickness less than 1 mm) to 923 K; and (4) flash annealing of as-cast Zr55Co31Al14 glassy plates with size of 1 x 6 x 6 mm at heating rates of 1, 5 and 15 K/s, respectively. For direct quenching, increasing Co/Zr ratio towards 1 and decreasing Al content contribute to formation of the B2-ZrCo phase. For conventional annealing, high annealing temperature and long annealing time accelerate B2-ZrCo phase formation. Also, low Al content and high Co/Zr ratio favours formation of the B2-ZrCo phase. For flash annealing, high heating rate promotes formation of the B2-ZrCo phase and restricts formation of phases like ZrCoAl and Zr6CoAl2 as well as retains the amorphous matrix. Overall, in order to produce BMG composites containing a large quantity of B2-ZrCo phase, two approaches can be considered. The first approach is to increase Co/Zr ratio towards 1 and decrease Al content in as-cast Zr-Co-Al BMG composites. The second approach is to anneal the Zr-Co-Al BMGs with high Co/Zr ratio and low Al content less than 14% at a high heating rate. Advisors/Committee Members: Ferry, Michael, Materials Science & Engineering, Faculty of Science, UNSW, Tang, Chunguang, Materials Science & Engineering, Faculty of Science, UNSW.

Subjects/Keywords: Co/Zr ratio; B2-ZrCo phase; Alloy composition; Work hardening

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

APA (6^th Edition):

Chen, Y. (2018). The evolution of B2-ZrCo phase in Zr-Co-Al bulk metallic glasses upon quenching from the melt and subsequent thermal treatment. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/61494 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:56107/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Chen, Yu. “The evolution of B2-ZrCo phase in Zr-Co-Al bulk metallic glasses upon quenching from the melt and subsequent thermal treatment.” 2018. Doctoral Dissertation, University of New South Wales. Accessed January 23, 2021. http://handle.unsw.edu.au/1959.4/61494 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:56107/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Chen, Yu. “The evolution of B2-ZrCo phase in Zr-Co-Al bulk metallic glasses upon quenching from the melt and subsequent thermal treatment.” 2018. Web. 23 Jan 2021.

Vancouver:

Chen Y. The evolution of B2-ZrCo phase in Zr-Co-Al bulk metallic glasses upon quenching from the melt and subsequent thermal treatment. [Internet] [Doctoral dissertation]. University of New South Wales; 2018. [cited 2021 Jan 23]. Available from: http://handle.unsw.edu.au/1959.4/61494 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:56107/SOURCE02?view=true.

Council of Science Editors:

Chen Y. The evolution of B2-ZrCo phase in Zr-Co-Al bulk metallic glasses upon quenching from the melt and subsequent thermal treatment. [Doctoral Dissertation]. University of New South Wales; 2018. Available from: http://handle.unsw.edu.au/1959.4/61494 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:56107/SOURCE02?view=true

Penn State University

3. Motl, Nathan Edward. Synthesis and Applications of Gold and Gold-copper Alloy Nanoparticles.

Degree: 2012, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/14652

► The unique physical and chemical properties of noble metal nanoparticles have enabled the materials to be utilized as invaluable tools for use in a wide… (more)

▼ The unique physical and chemical properties of noble metal nanoparticles have enabled the materials to be utilized as invaluable tools for use in a wide range of disciplines. Many of these applications depend on the ability to intelligently modify the material shape, composition and structure. Low temperature solution methods have been shown to produce colloidally stable nanomaterials with a variety of shapes and compositions. In this dissertation I describe our recent contributions to the development and application of complex nanomaterials, specifically gold and gold-copper alloy nanoparticles. We first demonstrate the synthesis and investigation of composition-tunable gold-copper alloy nanoparticles. This investigation was undertaken to examine the relationship between the alloy nanoparticle composition and the resulting optical properties. Specifically, highly uniform particles were examined using both powder X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDS). The resulting optical activity of the nanoparticles was compared with the theoretically predicted UV-Vis absorbance spectra. This study serves as a methodology template by which existing theoretical models can be tested with more complex systems. Next we describe the novel synthesis of Au-Cu2S hybrid nanoparticles via the phase segregation of AuCu alloy nanoparticles. Hybrid nanoparticles are characterized by discrete inorganic domains that are bound together through a solid-solid interface. These particles are often formed by nucleating the growth of a second inorganic domain on the surface of an existing particle through a seed mediated approach. As the complexity of nanomaterial synthesis and application increases, additional synthetic routes to these materials will be required. By heating AuCu alloy nanoparticles in the presence of sulfur it was possible to phase segregate the copper component to generate Au-Cu2S heterodimers with discrete Au and Cu2S components. The resulting particles were examined extensively with transmission electron microscopy (TEM), energy electron loss microscopy, (EELS), XRD, EDS and UV-Vis absorbance spectroscopy. Additional control experiments were performed to support the phase segregation route to hybrid nanoparticles. This process demonstrates a new method of nanomaterial synthesis that can draw upon a vast library of alloy and intermetallic nanoparticles as precursor materials Lastly, we demonstrate the use of both gold and copper nanoparticles for the fabrication of mesoscale components through modifying the existing lost mold – rapid infiltration forming (LM-RIF) process. Several generations of components with nano- and microscale features were shown with progressivessive improvements on part fabrication. This work served as a proof of concept, demonstrating a general technique that could incorporate the vast array of metal nanoparticles available into part fabrication. In addition to the miniaturization of existing components, this process could potentially lead to such medical advances as… Advisors/Committee Members: Raymond Edward Schaak, Dissertation Advisor/Co-Advisor, Lasse Jensen, Committee Member, Thomas E Mallouk, Committee Member, Robert Martin Rioux Jr., Committee Member.

Subjects/Keywords: colloidal hybrid nanoparticles; nanoparticle heterodimers; chemical transformations; AuCu; Au; Cu2S; plasmon; alloy nanoparticle; composition tunable

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

APA (6^th Edition):

Motl, N. E. (2012). Synthesis and Applications of Gold and Gold-copper Alloy Nanoparticles. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/14652

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):

Motl, Nathan Edward. “Synthesis and Applications of Gold and Gold-copper Alloy Nanoparticles.” 2012. Thesis, Penn State University. Accessed January 23, 2021. https://submit-etda.libraries.psu.edu/catalog/14652.

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

MLA Handbook (7^th Edition):

Motl, Nathan Edward. “Synthesis and Applications of Gold and Gold-copper Alloy Nanoparticles.” 2012. Web. 23 Jan 2021.

Vancouver:

Motl NE. Synthesis and Applications of Gold and Gold-copper Alloy Nanoparticles. [Internet] [Thesis]. Penn State University; 2012. [cited 2021 Jan 23]. Available from: https://submit-etda.libraries.psu.edu/catalog/14652.

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

Council of Science Editors:

Motl NE. Synthesis and Applications of Gold and Gold-copper Alloy Nanoparticles. [Thesis]. Penn State University; 2012. Available from: https://submit-etda.libraries.psu.edu/catalog/14652

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

University of Rochester

4. Wei, Helen Hsiu-Ying (1982 - ). Synthesis of colloidal semiconductor quantum dots: gradient alloy core and tunable surface composition.

Degree: PhD, 2015, University of Rochester

URL: http://hdl.handle.net/1802/30288

► Being versatile nano-materials, quantum dots (QDs) show their value by taking advantage of the unique optical properties and size-tunable emission and are widely applied in… (more)

▼ Being versatile nano-materials, quantum dots (QDs) show their value by taking advantage of the unique optical properties and size-tunable emission and are widely applied in many fields. Controllable and reproducible methods as well as reactive precursors are much in demand to render quantum dots better controlled materials with designable properties in potential applications. The photoluminescence intermittency (blinking) in a single QD is a distinct nature of the material and has become a major limit when applying QDs in biological labeling. One possible reason for blinking phenomena in single nanocrystal is Auger recombination (non-radiative decay with presence of trion). The gradient structure of alloy core (and gradually changed potential wall) may provide a soft confinement to electrons and holes, making Auger recombination inefficient. In this thesis, two synthetic methods were reported to build gradient alloy CdxZn1-xSe QDs cores: alternative hot injection and intra particle diffusion. The hot injection of Zn and Se precursors alternatively to CdSe core was difficult to control and reproduce due to ZnSe nuclei formation at high temperature. Annealing CdSe/ZnSe QDs at high temperature to trigger intra particle diffusion to form CdxZn1-xSe alloy cores was much controllable and reproducible. PL intensity time traces of a CdxZn1-xSe batch at 280 0C diffusion confirmed to have half blinkers and half nonblinkers. XRD results confirmed the alloy composition of CdxZn1-xSe core and EELS indicated the composition structure of CdxZn1-xSe QDs being Cd rich in the inner core and Zn rich on the outer shell. Another approach to optimize an easily operated synthetic method is to employ more reactive precursors that allow lower reaction temperature and time. Secondary phosphine sulfide (diphenylphosphine sulfide, DPP-S) was investigated in CdS QD synthesis to replace conventional tertiary phosphine based anion precursors (trioctylphosphine, TOP). Successive ionic adsorption and reaction (SILAR) was applied on CdS cores to make controllable size and surface composition of nanocrystals with Cd or S termination. X-ray photoelectron spectroscopy (XPS) confirmed that there were almost half cadmium and half sulfur on CdS core seeds, 87% sulfur for S-terminated CdS QDs and 91% cadmium for Cd-terminated CdS QDs. The band edge emission of S-terminated CdS QDs was observed to be quenched completely and then recovered after another layer of Cd added onto the surface. Density of electronic states calculation showed that mid-gap states formed in S-terminated QDs can efficiently provide non-radiative recombination pathways while well-defined band gap remained in Cd-terminated QDs. Geometry models revealed that sulfur atoms on the surface tend to form few S-S bonds and create flaws such as dangling bonds on the surface of QDs while Cd atoms are capable of producing continuous structures even in highly nonstoichiometric clusters. Also, we reported the investigation of secondary phosphine sulfide as an anion …

Subjects/Keywords: Density of states; Gradient alloy core; Quantum dots; Secondary phosphine; Surface composition; X-ray photoelectron spectroscopy

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

APA (6^th Edition):

Wei, H. H. (. -. ). (2015). Synthesis of colloidal semiconductor quantum dots: gradient alloy core and tunable surface composition. (Doctoral Dissertation). University of Rochester. Retrieved from http://hdl.handle.net/1802/30288

Chicago Manual of Style (16^th Edition):

Wei, Helen Hsiu-Ying (1982 - ). “Synthesis of colloidal semiconductor quantum dots: gradient alloy core and tunable surface composition.” 2015. Doctoral Dissertation, University of Rochester. Accessed January 23, 2021. http://hdl.handle.net/1802/30288.

MLA Handbook (7^th Edition):

Wei, Helen Hsiu-Ying (1982 - ). “Synthesis of colloidal semiconductor quantum dots: gradient alloy core and tunable surface composition.” 2015. Web. 23 Jan 2021.

Vancouver:

Wei HH(-). Synthesis of colloidal semiconductor quantum dots: gradient alloy core and tunable surface composition. [Internet] [Doctoral dissertation]. University of Rochester; 2015. [cited 2021 Jan 23]. Available from: http://hdl.handle.net/1802/30288.

Council of Science Editors:

Wei HH(-). Synthesis of colloidal semiconductor quantum dots: gradient alloy core and tunable surface composition. [Doctoral Dissertation]. University of Rochester; 2015. Available from: http://hdl.handle.net/1802/30288

Indian Institute of Science

5. Vinay, K S. Microstructural Evolution of Directionally Solidified Ni-Al-Re/Ru Alloys.

Degree: MSc Engg, Engineering, 2018, Indian Institute of Science

URL: http://etd.iisc.ac.in/handle/2005/4056

► Nickel based superalloys are high temperature materials which find application as blade and disc components of jet engines due to their ability to retain their… (more)

▼ Nickel based superalloys are high temperature materials which find application as blade and disc components of jet engines due to their ability to retain their mechanical properties at temperatures close to 0.8 of their melting point. The modern day nickel based superalloys are multicomponent alloys, containing up to 12 alloying elements which are added in balanced proportions to achieve high temperature strength and microstructural stability, Re and Ru have been the recent additions made to superalloy compositions in the last two decades. But the roles of Re and Ru in terms of partitioning among the phases γ and γ’ and its effects on mechanical properties are still not clear. Hence an effort was made to study their effects under constrains of constant volume fractions of γ’ and misfit between γ and γ’, to isolate effects that result purely due to composition. Three model alloy systems (two ternary and one quaternary) of the type Ni-Al-xRe, Ni-Al-yRu and Ni-Al-xRe-yRu, x=2.5/4 and y=2.5/6 with minor additions of 1.4 Hf and 0.07 C for reasons of castability were synthesized by investment casting. This thesis deals with the solidification related aspects of these alloys. Chapter 1 deals with a brief overview of Ni based superalloys in terms of their physical metallurgy, processing, microstructure and the effects of Re and Ru studied in literature. These are summarized and the objective of thesis laid out. The experimental details of the techniques employed for studying the cast structure such as optical microscopy, scanning electron microscopy, electron probe microanalysis and differential scanning calorimetry are discussed in Chapter 2 In Chapter 3, the experimental results concerning microstructure, chemistries (local and global), differential scanning calorimetry and supporting Thermo-Calc based simulations are presented. The composition of the directionally solidified alloys were estimated using quantitative EPMA spot analysis after homogenizing them to the best possible extent. The cooling rates experienced by the bottom, middle and tip sections (25mm, 150mm and 295mm respectively from chill plate) of the model alloys during casting was estimated using ProCASTTM simulations. The simulations show the cooling rates to vary from 12.5 K/min to 6 K/min, corresponding to the range of thermal gradients 3000 K/m to 1500 K/m from bottom to tip sections. These estimations were performed assuming a constant withdrawal velocity of 24 cm/hr. The morphological evolution of cast structure from bottom to tip section of the alloys was studied at a coarse scale with the aid of optical microscopy. A tendency towards increased branching of dendrites to form well developed tertiary arms is observed on moving from bottom to tip sections. Quantitative measurement of primary and secondary arm spacings (PDAS and SDAS) indicate that PDAS values increase from bottom to middle section and then saturates, whereas the SDAS values show an increase from bottom to tip sections. Also, the PDAS and SDAS values of MA-3 were observed to be… Advisors/Committee Members: Banerjee, Dipankar (advisor).

Subjects/Keywords: Nickel Based Superalloys; Solidification Alloys; Alloy Composition; Ni-Based Superalloys; Ni-Al-Re/Ru Alloys; Materials Engineering

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

APA (6^th Edition):

Vinay, K. S. (2018). Microstructural Evolution of Directionally Solidified Ni-Al-Re/Ru Alloys. (Masters Thesis). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/4056

Chicago Manual of Style (16^th Edition):

Vinay, K S. “Microstructural Evolution of Directionally Solidified Ni-Al-Re/Ru Alloys.” 2018. Masters Thesis, Indian Institute of Science. Accessed January 23, 2021. http://etd.iisc.ac.in/handle/2005/4056.

MLA Handbook (7^th Edition):

Vinay, K S. “Microstructural Evolution of Directionally Solidified Ni-Al-Re/Ru Alloys.” 2018. Web. 23 Jan 2021.

Vancouver:

Vinay KS. Microstructural Evolution of Directionally Solidified Ni-Al-Re/Ru Alloys. [Internet] [Masters thesis]. Indian Institute of Science; 2018. [cited 2021 Jan 23]. Available from: http://etd.iisc.ac.in/handle/2005/4056.

Council of Science Editors:

Vinay KS. Microstructural Evolution of Directionally Solidified Ni-Al-Re/Ru Alloys. [Masters Thesis]. Indian Institute of Science; 2018. Available from: http://etd.iisc.ac.in/handle/2005/4056

Brno University of Technology

6. Holub, Kamil. Vliv tavidla na vlastnosti svarového kovu: Influence of fluxes on weld metal properties.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/83215

► This thesis deals with the topic of submerged arc welding – an electric arc method of fusion welding, that uses a layer of granulated flux… (more)

Subjects/Keywords: Tavidlo; drátová elektroda; legovat; chemické složení; svarový kov; Flux; electrode wire; alloy; chemical composition; weld metal

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

APA (6^th Edition):

Holub, K. (2019). Vliv tavidla na vlastnosti svarového kovu: Influence of fluxes on weld metal properties. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/83215

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):

Holub, Kamil. “Vliv tavidla na vlastnosti svarového kovu: Influence of fluxes on weld metal properties.” 2019. Thesis, Brno University of Technology. Accessed January 23, 2021. http://hdl.handle.net/11012/83215.

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

MLA Handbook (7^th Edition):

Holub, Kamil. “Vliv tavidla na vlastnosti svarového kovu: Influence of fluxes on weld metal properties.” 2019. Web. 23 Jan 2021.

Vancouver:

Holub K. Vliv tavidla na vlastnosti svarového kovu: Influence of fluxes on weld metal properties. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 23]. Available from: http://hdl.handle.net/11012/83215.

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

Council of Science Editors:

Holub K. Vliv tavidla na vlastnosti svarového kovu: Influence of fluxes on weld metal properties. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/83215

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

Université de Lorraine

7. Vaillant, Anne-Sophie. Influence des coulées successives sur des alliages Ni-Cr et Co-Cr employés en odontologie prothétique : Influence of recasting on Ni-Cr and Co-Cr alloys used in prosthetic dentistry.

Degree: Docteur es, Sciences des matériaux, 2019, Université de Lorraine

URL: http://www.theses.fr/2019LORR0056

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Ce travail porte sur l’étude d’alliages à base prédominante employés en prothèse fixée dentaire (Co-Cr, Colado CC® et Ni-Cr, Colado NC®). La microstructure, la structure,… (more)

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Ce travail porte sur l’étude d’alliages à base prédominante employés en prothèse fixée dentaire (Co-Cr, Colado CC® et Ni-Cr, Colado NC®). La microstructure, la structure, la composition chimique, la dureté et le module d’élasticité de ces alliages ont été étudiés. Une analyse du chemin de solidification et du comportement en microségrégation a été réalisée. L’influence des recoulées a ensuite été analysée. Cinq coulées successives ont été réalisées dans différentes proportions d’alliage neuf (0, 25, 50 et 75 et 100%). La microstructure dendritique est constante au cours des recoulées, comme la large taille des grains. La composition chimique des alliages ne varie pas significativement, aussi bien dans les régions dendritiques qu’interdendritiques. La présence de particules d’Al2O3 a été observée sur les échantillons de Ni-Cr. La structure des alliages étudiés a été déterminée : elle est stable quel que soit le nombre de coulées. Les alliages présentent des valeurs de dureté diminuées lorsque les pourcentages de porosité augmentent tout en respectant le cadre normatif. Tous les échantillons testés répondent aux conditions normatives en termes de modules d’élasticité. Les recoulées n’ont pas d’influence sur le chemin de solidification des alliages ni sur les phases en présence.

This study deals with microstructural, structural, chemical and mechanical properties of two predominantly based dental alloys (Co-Cr, Colado CC® and Ni-Cr, Colado NC®). Cast alloys are characterized to analyze microstructure, structure, composition stability, hardness and elastic modulus. Solidification path was determined and microsegregation has been characterized. Influence of recasting has next been studied. Five times recasted alloys in different amounts were processed (0, 25, 50 and 75% of new alloy). It was demonstrated that the examined alloys are characterized by a dendritic microstructure with a large grain size, typical of the cast materials. No notable degenerative changes in microstructure were observed. Al2O3 particles were characterized on Ni-Cr alloy. Occurrence of porosities significantly increase in recast samples but remains clinically acceptable. Alloys demonstrated great compositional stability after 5 recasts. A significant decrease in Vickers hardness values appeared in the fourth recast in both alloys. Alloys showed no significant variation in term of modulus of elasticity, although a slight tendency decrease was observed. The main phase encountered is a face centered cubic solid solution. Secondary phases were identified. Number of recasting demonstrated to have negligible effect on phase identification and on solidification path.

Advisors/Committee Members: Cleymand, Franck (thesis director), Fleutot, Solenne (thesis director).

Subjects/Keywords: Prothèse fixée dentaire; Alliage dentaire; Recoulée; Microstructure; Composition chimique; Chemin de solidification; Fixed partial denture; Dental alloy; Recasting; Microstructure; Chemical composition; Solidification path; 620.16

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APA (6^th Edition):

Vaillant, A. (2019). Influence des coulées successives sur des alliages Ni-Cr et Co-Cr employés en odontologie prothétique : Influence of recasting on Ni-Cr and Co-Cr alloys used in prosthetic dentistry. (Doctoral Dissertation). Université de Lorraine. Retrieved from http://www.theses.fr/2019LORR0056

Chicago Manual of Style (16^th Edition):

Vaillant, Anne-Sophie. “Influence des coulées successives sur des alliages Ni-Cr et Co-Cr employés en odontologie prothétique : Influence of recasting on Ni-Cr and Co-Cr alloys used in prosthetic dentistry.” 2019. Doctoral Dissertation, Université de Lorraine. Accessed January 23, 2021. http://www.theses.fr/2019LORR0056.

MLA Handbook (7^th Edition):

Vaillant, Anne-Sophie. “Influence des coulées successives sur des alliages Ni-Cr et Co-Cr employés en odontologie prothétique : Influence of recasting on Ni-Cr and Co-Cr alloys used in prosthetic dentistry.” 2019. Web. 23 Jan 2021.

Vancouver:

Vaillant A. Influence des coulées successives sur des alliages Ni-Cr et Co-Cr employés en odontologie prothétique : Influence of recasting on Ni-Cr and Co-Cr alloys used in prosthetic dentistry. [Internet] [Doctoral dissertation]. Université de Lorraine; 2019. [cited 2021 Jan 23]. Available from: http://www.theses.fr/2019LORR0056.

Council of Science Editors:

Vaillant A. Influence des coulées successives sur des alliages Ni-Cr et Co-Cr employés en odontologie prothétique : Influence of recasting on Ni-Cr and Co-Cr alloys used in prosthetic dentistry. [Doctoral Dissertation]. Université de Lorraine; 2019. Available from: http://www.theses.fr/2019LORR0056

8. Lačnjevac Uroš. Electrochemical deposition and characterization of powders of the iron-group metals and alloys and powders of the nickel-molybdenum alloys.

Degree: PhD, Technology and Metallurgy, 2010, University of Belgrade

URL: http://dx.doi.org/10.2298/BG20101027LACNJEVAC ; http://eteze.bg.ac.rs/application/showtheses?thesesId=555 ; https://fedorabg.bg.ac.rs/fedora/get/o:6700/bdef:Content/get ; http://vbs.rs/scripts/cobiss?command=SEARCH&base=99999&select=ID=38609167

► Electrodeposition of Fe-Ni alloy powders from ammonium chloride and sodium sulfate containing solutions of different Ni/Fe ions concentration ratios and Mo-Ni-O alloy powders from ammonium… (more)

▼ Electrodeposition of Fe-Ni alloy powders from ammonium chloride and sodium sulfate containing solutions of different Ni/Fe ions concentration ratios and Mo-Ni-O alloy powders from ammonium chloride and ammonium sulfate containing solutions of different Ni/Mo ions concentration ratios was investigated by the polarization measurements. All polarization curves have the similar shape characterized by two inflection points. The first inflection point corresponds to the beginning of the alloy deposition, which is accompanied with the sharp increase of the current density due to the simultaneous hydrogen evolution reaction, while the second inflection point reflects the moment when the total cathodic process becomes controlled by the rate of the hydrogen bubbles formation. The morphology, chemical and phase composition of the electrodeposited Fe-Ni and Mo-Ni-O alloy powders were examined using SEM, EDS, XRD, DSC, TGA, AAS, TEM and SAED analysis. The morphology of electrodeposited Fe-Ni alloy powders was found to depend on the Ni/Fe ions concentration ratio, as well as on the presence of Fe(III) or Fe(II) ions in the solution. A common characteristic of the morphology of all Fe-Ni alloy powders was the presence of rounded agglomerates and cone shape cavities corresponding to the positions where the hydrogen bubbles were formed. In the powders electrodeposited at the ratio Ni/Fe = 9/1 from both solutions, pagoda like crystals, corresponding to the FeNi3 single phase, were detected. The EDS analysis of alloy powders confirmed anomalous co-deposition of Fe and Ni at all investigated Ni/Fe ratios, being more pronounced using solutions of Fe(III) salt. After annealing in air at 400, 600 and 700°C all alloy powders oxidized forming NiO, NiFe2O4 and Fe2O3 phases in different proportions depending on the original powder composition. The NiFe2O4 phase, one of the most important magnetic materials with wide range of applications, was found to be the dominant one in the sample electrodeposited at Ni/Fe = 1/3 after annealing at 600°C. It was found that the morphology and the chemical composition of the Mo-Ni-O alloy powders were influenced by the Ni/Mo ions concentration ratio. The morphology of the Mo-Ni-O alloy powders is characterized by the presence of two types of rounded agglomerates: agglomerates with compact, relatively smooth surface and agglomerates with rough surface comprised of nanosized crystals. Results of the EDS analysis revealed the presence of up to 70 at. % of oxygen in the deposit as well as the non-homogeneous composition of powder particles. The asdeposited alloy powders were nanocrystalline, showing no peaks in diffractograms. During the stepwise annealing of powders at 300, 400, 500 and 600°C in nitrogen atmosphere the dimension of crystallites increased with increasing the annealing temperature and the peaks corresponding to the MoO3 and NiMoO4 phases appeared in diffractograms already after annealing at 300°C. After annealing at 600°C in the powder electrodeposited at the Ni/Mo = 1/0.3…

Subjects/Keywords: electrodeposition; Fe-Ni alloy powder; Mo-Ni-O alloy powder; morphology; chemical composition; phase composition; annealing; elektrohemijsko taloženje; prah Fe-Ni legure; prah Mo-Ni-O legure; morfologija; hemijski sastav; fazni sastav; termički tretman

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APA (6^th Edition):

Uroš, L. (2010). Electrochemical deposition and characterization of powders of the iron-group metals and alloys and powders of the nickel-molybdenum alloys. (Doctoral Dissertation). University of Belgrade. Retrieved from http://dx.doi.org/10.2298/BG20101027LACNJEVAC ; http://eteze.bg.ac.rs/application/showtheses?thesesId=555 ; https://fedorabg.bg.ac.rs/fedora/get/o:6700/bdef:Content/get ; http://vbs.rs/scripts/cobiss?command=SEARCH&base=99999&select=ID=38609167

Chicago Manual of Style (16^th Edition):

Uroš, Lačnjevac. “Electrochemical deposition and characterization of powders of the iron-group metals and alloys and powders of the nickel-molybdenum alloys.” 2010. Doctoral Dissertation, University of Belgrade. Accessed January 23, 2021. http://dx.doi.org/10.2298/BG20101027LACNJEVAC ; http://eteze.bg.ac.rs/application/showtheses?thesesId=555 ; https://fedorabg.bg.ac.rs/fedora/get/o:6700/bdef:Content/get ; http://vbs.rs/scripts/cobiss?command=SEARCH&base=99999&select=ID=38609167.

MLA Handbook (7^th Edition):

Uroš, Lačnjevac. “Electrochemical deposition and characterization of powders of the iron-group metals and alloys and powders of the nickel-molybdenum alloys.” 2010. Web. 23 Jan 2021.

Vancouver:

Uroš L. Electrochemical deposition and characterization of powders of the iron-group metals and alloys and powders of the nickel-molybdenum alloys. [Internet] [Doctoral dissertation]. University of Belgrade; 2010. [cited 2021 Jan 23]. Available from: http://dx.doi.org/10.2298/BG20101027LACNJEVAC ; http://eteze.bg.ac.rs/application/showtheses?thesesId=555 ; https://fedorabg.bg.ac.rs/fedora/get/o:6700/bdef:Content/get ; http://vbs.rs/scripts/cobiss?command=SEARCH&base=99999&select=ID=38609167.

Council of Science Editors:

Uroš L. Electrochemical deposition and characterization of powders of the iron-group metals and alloys and powders of the nickel-molybdenum alloys. [Doctoral Dissertation]. University of Belgrade; 2010. Available from: http://dx.doi.org/10.2298/BG20101027LACNJEVAC ; http://eteze.bg.ac.rs/application/showtheses?thesesId=555 ; https://fedorabg.bg.ac.rs/fedora/get/o:6700/bdef:Content/get ; http://vbs.rs/scripts/cobiss?command=SEARCH&base=99999&select=ID=38609167

Virginia Tech

9. Zhang, Yaofu. Dezincification and Brass Lead Leaching in Premise Plumbing Systems: Effects of Alloy, Physical Conditions and Water Chemistry.

Degree: MS, Environmental Planning, 2009, Virginia Tech

URL: http://hdl.handle.net/10919/36280

► Brass components are widely used in drinking water distribution systems as valves, faucets and other fixtures. They can be corroded by â dezincification,â which is… (more)

▼ Brass components are widely used in drinking water distribution systems as valves, faucets and other fixtures. They can be corroded by â dezincification,â which is the selective leaching of zinc from the alloy. Dezincification in potable water systems has important practical consequences that include clogged water lines, premature system failure and leaks, and release of contaminants such as lead. Brass failures attributed to dezincification are known to occur at least occasionally all over the world, and have emerged as a significant problem in the U.S. recently due to the use of inexpensive high zinc brass fittings in cross-linked polyethylene (PEX) plumbing systems. As PEX systems gain popularity and leaded brass is recognized as an important source of lead in potable water systems, it is important to examine dezincification corrosion in more detail. An in-depth literature review revealed that conventional wisdom about dezincification was no longer adequate in explaining failures observed in modern water systems. Little research has been conducted since the landmark work of Turner et al. nearly half a century ago. The potential role of chloramines, phosphate inhibitors, and modern understanding of water chemistry need evaluation. The role of physical factors including stirring, heating and galvanic connections are also potentially influential. A mechanistic study of zinc solubility and corrosion of copper: zinc couples provided insight to factors that might mitigate and exacerbate zinc leaching from brass. Zinc solubility and corrosion was reduced by higher pH and bicarbonate, but was enhanced by higher chloride. Hardness ions including Mg+2 and Ca+2 had little effect. Alloys with higher zinc content had a greater propensity for dezincification corrosion. Stirring and galvanic connections caused brass to leach more metals and have higher weight loss. Heating may contribute to corrosion scale accumulation. A comprehensive examination of dezincification as a function of water chemistry used numerous techniques that include measurement of galvanic currents, metal leaching, and weight loss. In general, as would be predicted based on results of the study of solubility and corrosion of pure zinc, chloride emerged as an aggressive ion whereas bicarbonate was beneficial to brass corrosion. Hardness had little impact, and phosphates, silicates and Zn+2 inhibitors had a significant short-term benefit but little long-term benefit. The relationship between dezincification corrosion, lead leaching from brass, and water chemistry was investigated in Chapter 5. Surprisingly, lead and zinc leaching from a range of brasses were found to be negatively correlated. Hence, use of brasses that minimize dezincification problems might increase lead leaching. This thesis represents a comprehensive analysis of factors that are influential for dezincification and lead leaching from brass in premise water distribution systems through literature reviews, mechanistic investigations, bench-scale experiments, and… Advisors/Committee Members: Edwards, Marc A. (committeechair), Boardman, Gregory D. (committee member), Marr, Linsey C. (committee member).

Subjects/Keywords: Dezincification; Physical Condition; Alloy composition; Water Chemistry; Brass Lead Leaching

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APA (6^th Edition):

Zhang, Y. (2009). Dezincification and Brass Lead Leaching in Premise Plumbing Systems: Effects of Alloy, Physical Conditions and Water Chemistry. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/36280

Chicago Manual of Style (16^th Edition):

Zhang, Yaofu. “Dezincification and Brass Lead Leaching in Premise Plumbing Systems: Effects of Alloy, Physical Conditions and Water Chemistry.” 2009. Masters Thesis, Virginia Tech. Accessed January 23, 2021. http://hdl.handle.net/10919/36280.

MLA Handbook (7^th Edition):

Zhang, Yaofu. “Dezincification and Brass Lead Leaching in Premise Plumbing Systems: Effects of Alloy, Physical Conditions and Water Chemistry.” 2009. Web. 23 Jan 2021.

Vancouver:

Zhang Y. Dezincification and Brass Lead Leaching in Premise Plumbing Systems: Effects of Alloy, Physical Conditions and Water Chemistry. [Internet] [Masters thesis]. Virginia Tech; 2009. [cited 2021 Jan 23]. Available from: http://hdl.handle.net/10919/36280.

Council of Science Editors:

Zhang Y. Dezincification and Brass Lead Leaching in Premise Plumbing Systems: Effects of Alloy, Physical Conditions and Water Chemistry. [Masters Thesis]. Virginia Tech; 2009. Available from: http://hdl.handle.net/10919/36280

University of Sydney

10. Hasan, Md Nazmul. Microstructure and mechanical properties of a CrMnFeCoNi high-entropy alloy with gradient structures .

Degree: University of Sydney

URL: http://hdl.handle.net/2123/23036

► High-entropy alloys (HEAs) that demonstrate excellent mechanical properties over steel-based alloys are not exempt from the common dilemma of strength–ductility trade-off, which limits their potential… (more)

Subjects/Keywords: high entropy alloy; gradient structure; microstructural evolution; strain-rate sensitivity; composition fluctuation

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APA (6^th Edition):

Hasan, M. N. (n.d.). Microstructure and mechanical properties of a CrMnFeCoNi high-entropy alloy with gradient structures . (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/23036

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hasan, Md Nazmul. “Microstructure and mechanical properties of a CrMnFeCoNi high-entropy alloy with gradient structures .” Thesis, University of Sydney. Accessed January 23, 2021. http://hdl.handle.net/2123/23036.

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hasan, Md Nazmul. “Microstructure and mechanical properties of a CrMnFeCoNi high-entropy alloy with gradient structures .” Web. 23 Jan 2021.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Vancouver:

Hasan MN. Microstructure and mechanical properties of a CrMnFeCoNi high-entropy alloy with gradient structures . [Internet] [Thesis]. University of Sydney; [cited 2021 Jan 23]. Available from: http://hdl.handle.net/2123/23036.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

Council of Science Editors:

Hasan MN. Microstructure and mechanical properties of a CrMnFeCoNi high-entropy alloy with gradient structures . [Thesis]. University of Sydney; Available from: http://hdl.handle.net/2123/23036

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

The Ohio State University

11. Wong, Fariaty. The Effect of Alloy Composition on the Localized Corrosion Behavior of Ni-Cr-Mo Alloys.

Degree: PhD, Materials Science and Engineering, 2009, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1237842767

► Ni-Cr-Mo alloy are known as one of the most versatile Ni-based alloys in resisting corrosion. Additions of Cr and Mo have been proven to… (more)

▼ Ni-Cr-Mo alloy are known as one of the most versatile Ni-based alloys in resisting corrosion. Additions of Cr and Mo have been proven to be the cause of the good corrosion resistance behavior. The role of Cr and Mo in resisting localized corrosion particularly, pitting corrosion was studied. Ni-Cr-Mo alloys were fabricated with twenty four unique compositions. Polarization experiments were conducted on these alloys in 0.5M NaCl and low pH chloride solution at varying temperatures from 45 to 90°C to obtain corrosion parameters namely, pitting and repassivation potentials. Multiple linear regression analysis was performed to construct a mathematical expression that correlate the pitting and repassivation potentials to the alloying content at each environment. This expression allows us to roughly predict the corrosion behavior of the Ni-Cr-Mo alloys through Cr and Mo contents only. It appears that Cr content is more dominant than Mo content in raising the pitting potential in neutral chloride condition. The effect of both Cr and Mo are quite uniform in affecting the repassivation potential values of the alloys in neutral chloride. The effect of Mo is greater than Cr in the low pH and higher temperature solutions in affecting both pitting and repassivation potentials. Pitting corrosion is commonly preceded by the occurrence of metastable pitting. Thus, one can better understand the pitting process of an alloy through its metastable pitting behavior. Rigorous metastable pitting study was conducted on Ni-Cr-Mo alloys with Cr content varying from 20 to 29 wt.% and Mo content varying from 12 to 25 wt.%. Potentiostatic experiments were performed in 90°C of 0.5M NaCl to promote the metastable pitting incidence. Analysis was done on the potentiostatic data to better characterize the metastable pitting behavior of the Ni-Cr-Mo alloys. It was observed that a higher Mo content in the Ni-based alloy is responsible for the lower peak current values and slowing down the growth rates of the faster growing pits. The Cr content seems to impact the repassivation rates of the metastable pits where higher Cr content increases the repassivation rates. The repassivation behavior of Ni-Cr-Mo alloys was studied through an electrochemical testing consisted of potentiodynamic-galvanostatic-potentiodynamic polarizations. It was found that higher Mo-containing alloys were extremely corrosion resistant given that they had Cr content of at least 20 wt.%. Alloys with higher Cr and higher Ni content had higher repassivation potentials when compared to another alloy with similar Mo content. Voltage component analysis found surface overpotential and reversible potentials of the alloys determined the repassivation potential values. The crevice growth rate of Alloy C-22 was ohmically controlled. XPS analysis found that Cr(III) oxide was the main passivating element for the Ni-Cr-Mo alloys. Mo(VI) was enriched on the crevice area. Mo in 0, +4, and +6 oxidation states were detected on the transpassive dissolution layers that formed on higher… Advisors/Committee Members: Buchheit, Rudolph (Advisor).

Subjects/Keywords: Materials Science; pitting corrosion; repassivation potential; metastable pitting; alloy composition; Ni alloys

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APA (6^th Edition):

Wong, F. (2009). The Effect of Alloy Composition on the Localized Corrosion Behavior of Ni-Cr-Mo Alloys. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1237842767

Chicago Manual of Style (16^th Edition):

Wong, Fariaty. “The Effect of Alloy Composition on the Localized Corrosion Behavior of Ni-Cr-Mo Alloys.” 2009. Doctoral Dissertation, The Ohio State University. Accessed January 23, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1237842767.

MLA Handbook (7^th Edition):

Wong, Fariaty. “The Effect of Alloy Composition on the Localized Corrosion Behavior of Ni-Cr-Mo Alloys.” 2009. Web. 23 Jan 2021.

Vancouver:

Wong F. The Effect of Alloy Composition on the Localized Corrosion Behavior of Ni-Cr-Mo Alloys. [Internet] [Doctoral dissertation]. The Ohio State University; 2009. [cited 2021 Jan 23]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1237842767.

Council of Science Editors:

Wong F. The Effect of Alloy Composition on the Localized Corrosion Behavior of Ni-Cr-Mo Alloys. [Doctoral Dissertation]. The Ohio State University; 2009. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1237842767

12. Hamdani, Fethi. Improvement of the corrosion and oxidation resistance of Ni-based alloys by optimizing the chromium content : Amélioration de la résistance à la corrosion et l'oxydation des alliages base nickel par l'optimisation de la teneur en chrome.

Degree: Docteur es, Matériaux, 2015, INSA Lyon

URL: http://www.theses.fr/2015ISAL0012

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Cette étude fondamentale est dédiée à la compréhension de l’influence de la composition chimique, notamment la teneur en chrome, des alliages base de nickel sur… (more)

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Cette étude fondamentale est dédiée à la compréhension de l’influence de la composition chimique, notamment la teneur en chrome, des alliages base de nickel sur leur mécanismes de corrosion et d’oxydation. La corrosion sous contrainte intergranular (CSCIG) est un mode de dégradation qui affecte de nombreux alliages au sein des réacteurs à eau pressurisé. En particulier, les alliages base nickel tubes des générateur de vapeur (GV). La sensibilité à la CSC est désormais dépend de la teneur en chrome, ce qui a conduit au remplacement de l’alliage 600 (Ni-16Cr-9Fe) par l’alliage 690 (Ni-30Cr-9Fe). Cependant le bon comportement de l’alliage 690 en termes de résistance à la corrosion restes mal défini. L’objective de cette thèse est double : i) déterminer l’effet de la teneur en chrome, ii) contribuer à la compréhension de l’effet de fer étant un élément d’addition sur la résistance à la corrosion et l’oxydation généralisée des alliages base nickel en milieu primaire assimilé et en vapeur surchauffée à 700°C. Par ailleurs, des analyses électrochimiques pertinentes dans la température ambiante ont été mené afin d’établir une corrélation entre les propriétés physiques de film passive susceptible de protéger le matériau et de la teneur en chrome. Des alliages modèles binaires Ni-Cr, à teneur de chrome varie entre 14 et 30 % en poids, des alliages ternaires Ni-Cr-8Fe et l’alliage 600 ont été étudies. L’aspect expérimental de cette étude repose sur des techniques conventionnelles: SEM, STEM, EDX, Potentiodynamique, EIS, Chronoamperometrie, Mott-Schottky. La cinétique d’oxydation en vapeur surchauffée a été déterminée en mesurant l’apport de masse. L’impact de l’état de surface sur le processus de la corrosion et l’oxydation a été mis en évidence. Les polissages miroir et électrochimique ont été réalisés afin de découpler l’effet de l’écrouissage développé en subsurface, induit par la préparation de surface, et la composition chimique de l’alliage. La teneur en chrome limite à partir de laquelle l’alliage a un comportement satisfaisant en corrosion a été déterminé à 20% dans le milieu primaire. Cependant les analyses électrochimiques ont décelé l’existence d’une teneur en chrome optimal à 26%. La cinétique d’oxydation des alliages modèles ainsi que la morphologie des oxydes formés sur ces matériaux dans le milieu vapeur surchauffée ont indiqué l’existence d’une teneur en chrome optimal à 24%. Une dégradation des propriétés des films d’oxydes a été observée en augmentant la teneur en chrome au-dessus de l’optimum. En résumé, ce travail se préoccupe de l’optimisation de la teneur en chrome, méthode plus adéquate, pour l’amélioration de la résistance à la corrosion et l’oxydation des alliages base nickel.

This fundamental study is focused on the understanding of the influence of the chemical composition of Ni-based alloys on their corrosion and oxidation mechanisms. This work is not dedicated for a particular application. It is well known for instance that Ni-based alloys are susceptible to intergranular stress corrosion…

Advisors/Committee Members: Normand, Bernard (thesis director), Watanabe, Yutaka (thesis director).

Subjects/Keywords: Alliage de nickel; Corrosion; Cinétique d'oxydation; Influence de la composition chimique; Teneur en chrome; REP - Réacteur à eau pressurisée; Vapeur d'eau surchauffée; Nickel alloy; Corrosion; Kinetics of oxydation; Effect of chemical composition; Chromium content; Passivation; PWR - Pressurized Water Reactor; Superhearted steam; 620.189 307 2

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

APA (6^th Edition):

Hamdani, F. (2015). Improvement of the corrosion and oxidation resistance of Ni-based alloys by optimizing the chromium content : Amélioration de la résistance à la corrosion et l'oxydation des alliages base nickel par l'optimisation de la teneur en chrome. (Doctoral Dissertation). INSA Lyon. Retrieved from http://www.theses.fr/2015ISAL0012

Chicago Manual of Style (16^th Edition):

Hamdani, Fethi. “Improvement of the corrosion and oxidation resistance of Ni-based alloys by optimizing the chromium content : Amélioration de la résistance à la corrosion et l'oxydation des alliages base nickel par l'optimisation de la teneur en chrome.” 2015. Doctoral Dissertation, INSA Lyon. Accessed January 23, 2021. http://www.theses.fr/2015ISAL0012.

MLA Handbook (7^th Edition):

Hamdani, Fethi. “Improvement of the corrosion and oxidation resistance of Ni-based alloys by optimizing the chromium content : Amélioration de la résistance à la corrosion et l'oxydation des alliages base nickel par l'optimisation de la teneur en chrome.” 2015. Web. 23 Jan 2021.

Vancouver:

Hamdani F. Improvement of the corrosion and oxidation resistance of Ni-based alloys by optimizing the chromium content : Amélioration de la résistance à la corrosion et l'oxydation des alliages base nickel par l'optimisation de la teneur en chrome. [Internet] [Doctoral dissertation]. INSA Lyon; 2015. [cited 2021 Jan 23]. Available from: http://www.theses.fr/2015ISAL0012.

Council of Science Editors:

Hamdani F. Improvement of the corrosion and oxidation resistance of Ni-based alloys by optimizing the chromium content : Amélioration de la résistance à la corrosion et l'oxydation des alliages base nickel par l'optimisation de la teneur en chrome. [Doctoral Dissertation]. INSA Lyon; 2015. Available from: http://www.theses.fr/2015ISAL0012

Brno University of Technology

13. Ročňáková, Ivana. Korozní degradace hořčíkových slitin v SBF roztocích: Corrosion degradation of magnesium alloys in SBF solutions.

Degree: 2018, Brno University of Technology

URL: http://hdl.handle.net/11012/6313

► Nowadays, magnesium alloys are used in many sectors of human activity, particularly in the aerospace and automotive industries, due to a combination of good mechanical… (more)

Subjects/Keywords: Hořčíkové slitiny; SBF; koroze; vliv času; pH; složení; atomová absorpční spektrometrie; F AAS; ET AAS; Magnesium alloy; SBF; corrosion; effect of time; pH; composition; atomic absorption spectrometry; F AAS; ET AAS

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APA (6^th Edition):

Ročňáková, I. (2018). Korozní degradace hořčíkových slitin v SBF roztocích: Corrosion degradation of magnesium alloys in SBF solutions. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/6313

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):

Ročňáková, Ivana. “Korozní degradace hořčíkových slitin v SBF roztocích: Corrosion degradation of magnesium alloys in SBF solutions.” 2018. Thesis, Brno University of Technology. Accessed January 23, 2021. http://hdl.handle.net/11012/6313.

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

MLA Handbook (7^th Edition):

Ročňáková, Ivana. “Korozní degradace hořčíkových slitin v SBF roztocích: Corrosion degradation of magnesium alloys in SBF solutions.” 2018. Web. 23 Jan 2021.

Vancouver:

Ročňáková I. Korozní degradace hořčíkových slitin v SBF roztocích: Corrosion degradation of magnesium alloys in SBF solutions. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Jan 23]. Available from: http://hdl.handle.net/11012/6313.

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

Council of Science Editors:

Ročňáková I. Korozní degradace hořčíkových slitin v SBF roztocích: Corrosion degradation of magnesium alloys in SBF solutions. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/6313

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

University of Queensland

14. Sivarupan, Tharmalingam. Ductility and solidification issues in Al-Si-Cu-Mg alloys.

Degree: School of Mechanical and Mining Engineering, 2014, University of Queensland

URL: http://espace.library.uq.edu.au/view/UQ:341969

Subjects/Keywords: Casting alloy; Casting; Al-Si alloys; SDAS; Intermetallics; β-plates; α-particle; Solidification; Alloy composition; Dendrite arm spacing; Alpha particle; Beta plate; Ductility; Strength; EBSD; SEM and TEM images; Back Scattered electron diffraction; 0912 Materials Engineering

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APA (6^th Edition):

Sivarupan, T. (2014). Ductility and solidification issues in Al-Si-Cu-Mg alloys. (Thesis). University of Queensland. Retrieved from http://espace.library.uq.edu.au/view/UQ:341969

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):

Sivarupan, Tharmalingam. “Ductility and solidification issues in Al-Si-Cu-Mg alloys.” 2014. Thesis, University of Queensland. Accessed January 23, 2021. http://espace.library.uq.edu.au/view/UQ:341969.

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

MLA Handbook (7^th Edition):

Sivarupan, Tharmalingam. “Ductility and solidification issues in Al-Si-Cu-Mg alloys.” 2014. Web. 23 Jan 2021.

Vancouver:

Sivarupan T. Ductility and solidification issues in Al-Si-Cu-Mg alloys. [Internet] [Thesis]. University of Queensland; 2014. [cited 2021 Jan 23]. Available from: http://espace.library.uq.edu.au/view/UQ:341969.

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

Council of Science Editors:

Sivarupan T. Ductility and solidification issues in Al-Si-Cu-Mg alloys. [Thesis]. University of Queensland; 2014. Available from: http://espace.library.uq.edu.au/view/UQ:341969

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

15. Tokoro, Atsuo. Sigma phase formation in binary alloys of the transition elements.

Degree: 1959, University of Nevada – Reno

URL: http://hdl.handle.net/11714/1753

► The intermediate phase now designated the sigma phase was first brought to the attention of physicists and metallurgists by Bain and Griffiths (1). Since their… (more)

Subjects/Keywords: intermediate phase; sigma phase; Bain adn Griffiths; non-magnetic phase; iron-rhromium alloys of equiatomic composition; austenitic stainless steels; brittle failure; alloys; iron; chromium; Sully and Heal; cobalt-chromium system; isomorphous; binary alloy systems; ternary alloy systems; transition elements; binary sigma phase; composition range; Mackay Science Project; alloys

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APA (6^th Edition):

Tokoro, A. (1959). Sigma phase formation in binary alloys of the transition elements. (Thesis). University of Nevada – Reno. Retrieved from http://hdl.handle.net/11714/1753

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):

Tokoro, Atsuo. “Sigma phase formation in binary alloys of the transition elements.” 1959. Thesis, University of Nevada – Reno. Accessed January 23, 2021. http://hdl.handle.net/11714/1753.

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

MLA Handbook (7^th Edition):

Tokoro, Atsuo. “Sigma phase formation in binary alloys of the transition elements.” 1959. Web. 23 Jan 2021.

Vancouver:

Tokoro A. Sigma phase formation in binary alloys of the transition elements. [Internet] [Thesis]. University of Nevada – Reno; 1959. [cited 2021 Jan 23]. Available from: http://hdl.handle.net/11714/1753.

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

Council of Science Editors:

Tokoro A. Sigma phase formation in binary alloys of the transition elements. [Thesis]. University of Nevada – Reno; 1959. Available from: http://hdl.handle.net/11714/1753

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

16. Smith, Andrew Logan, Mr. Thermodynamic Evaluation and Modeling of Grade 91 Alloy and its Secondary Phases through CALPHAD Approach.

Degree: MS, Materials Science and Engineering, 2018, Florida International University

URL: https://digitalcommons.fiu.edu/etd/3773 ; 10.25148/etd.FIDC006862 ; FIDC006862

► Grade 91 (Gr.91) is a common structural material used in boiler applications and is favored due to its high temperature creep strength and oxidation… (more)

Subjects/Keywords: Grade 91 steel; Creep resistance; Ferritic-Martensitic steels; Welding microstructure; Computational thermodynamics; Secondary phase; Alloy composition; Computational Engineering; Structural Materials

…33 4.2.2 Composition of Grade 91 Baseline Study… …M23C6 Phase ... 54 5.2.2 Mole and Composition Change of Titanium (Ti) with of MX1… …59 5.2.4 Mole Fraction and Composition of New MX3 Phase under S-3 Simulation ... 61 5.2.5 Z… …x29; ...................................... 27 Table 2. Chemical composition from the ASME… …35 Table 4. Compositional alloy changes to the Gr.91 base system under different niobium…

10 more images…

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APA (6^th Edition):

Smith, Andrew Logan, M. (2018). Thermodynamic Evaluation and Modeling of Grade 91 Alloy and its Secondary Phases through CALPHAD Approach. (Thesis). Florida International University. Retrieved from https://digitalcommons.fiu.edu/etd/3773 ; 10.25148/etd.FIDC006862 ; FIDC006862

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):

Smith, Andrew Logan, Mr. “Thermodynamic Evaluation and Modeling of Grade 91 Alloy and its Secondary Phases through CALPHAD Approach.” 2018. Thesis, Florida International University. Accessed January 23, 2021. https://digitalcommons.fiu.edu/etd/3773 ; 10.25148/etd.FIDC006862 ; FIDC006862.

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

MLA Handbook (7^th Edition):

Smith, Andrew Logan, Mr. “Thermodynamic Evaluation and Modeling of Grade 91 Alloy and its Secondary Phases through CALPHAD Approach.” 2018. Web. 23 Jan 2021.

Vancouver:

Smith, Andrew Logan M. Thermodynamic Evaluation and Modeling of Grade 91 Alloy and its Secondary Phases through CALPHAD Approach. [Internet] [Thesis]. Florida International University; 2018. [cited 2021 Jan 23]. Available from: https://digitalcommons.fiu.edu/etd/3773 ; 10.25148/etd.FIDC006862 ; FIDC006862.

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

Council of Science Editors:

Smith, Andrew Logan M. Thermodynamic Evaluation and Modeling of Grade 91 Alloy and its Secondary Phases through CALPHAD Approach. [Thesis]. Florida International University; 2018. Available from: https://digitalcommons.fiu.edu/etd/3773 ; 10.25148/etd.FIDC006862 ; FIDC006862

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

17. Walkiewicz, John W. The effects of selected fabrication parameters on the magnetic properties of Sm-Co permanent magnets.

Degree: 1973, University of Nevada – Reno

URL: http://hdl.handle.net/11714/1774

► Studies were conducted to determine the effects of various parameters on the magnetic properties of sintered Sm-Co permanent magnets. The standard method of fabricating the… (more)

Subjects/Keywords: parameters; magnetic properties of sintered Sm-C0 permanent magnets; magnets; arc-melting; crushing alloy; grinding alloy; aligning powder; pressing powder; sintering green compacts; optimum composition; maximum values; optimum sintering temperatures; optimum grinding times; grinding temperatures; magnetic properties; Mackay Science Project; magnets

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APA (6^th Edition):

Walkiewicz, J. W. (1973). The effects of selected fabrication parameters on the magnetic properties of Sm-Co permanent magnets. (Thesis). University of Nevada – Reno. Retrieved from http://hdl.handle.net/11714/1774

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):

Walkiewicz, John W. “The effects of selected fabrication parameters on the magnetic properties of Sm-Co permanent magnets.” 1973. Thesis, University of Nevada – Reno. Accessed January 23, 2021. http://hdl.handle.net/11714/1774.

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

MLA Handbook (7^th Edition):

Walkiewicz, John W. “The effects of selected fabrication parameters on the magnetic properties of Sm-Co permanent magnets.” 1973. Web. 23 Jan 2021.

Vancouver:

Walkiewicz JW. The effects of selected fabrication parameters on the magnetic properties of Sm-Co permanent magnets. [Internet] [Thesis]. University of Nevada – Reno; 1973. [cited 2021 Jan 23]. Available from: http://hdl.handle.net/11714/1774.

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

Council of Science Editors:

Walkiewicz JW. The effects of selected fabrication parameters on the magnetic properties of Sm-Co permanent magnets. [Thesis]. University of Nevada – Reno; 1973. Available from: http://hdl.handle.net/11714/1774

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

University of the Western Cape

18. Ntsendwana, Bulelwa. Advanced low temperature metal hydride materials for low temperature proton exchange membrane fuel cell application .

Degree: 2010, University of the Western Cape

URL: http://hdl.handle.net/11394/2582

► Energy is one of the basic needs of human beings and is extremely crucial for continued development of human life. Our work, leisure and our… (more)

Subjects/Keywords: Hydrogen energy; Polymer Exchange Membrane Fuel Cell; Solid state hydrogen storage; Metal hydrides; AB5 hydride-forming alloy; Ce-substituted LaNi5; Surface modification; Kinetics; Thermodynamics; Pressure-Composition Isotherm; Thermal conductivity; Heat and Mass transfer

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APA (6^th Edition):

Ntsendwana, B. (2010). Advanced low temperature metal hydride materials for low temperature proton exchange membrane fuel cell application . (Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/2582

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):

Ntsendwana, Bulelwa. “Advanced low temperature metal hydride materials for low temperature proton exchange membrane fuel cell application .” 2010. Thesis, University of the Western Cape. Accessed January 23, 2021. http://hdl.handle.net/11394/2582.

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

MLA Handbook (7^th Edition):

Ntsendwana, Bulelwa. “Advanced low temperature metal hydride materials for low temperature proton exchange membrane fuel cell application .” 2010. Web. 23 Jan 2021.

Vancouver:

Ntsendwana B. Advanced low temperature metal hydride materials for low temperature proton exchange membrane fuel cell application . [Internet] [Thesis]. University of the Western Cape; 2010. [cited 2021 Jan 23]. Available from: http://hdl.handle.net/11394/2582.

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

Council of Science Editors:

Ntsendwana B. Advanced low temperature metal hydride materials for low temperature proton exchange membrane fuel cell application . [Thesis]. University of the Western Cape; 2010. Available from: http://hdl.handle.net/11394/2582

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

19. Terek Pal. Unapređenje kvaliteta alata za livenje pod pritiskom primenom tehnologija inženjerstva površina.

Degree: 2016, University of Novi Sad

URL: https://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija146831515118910.pdf?controlNumber=(BISIS)101472&fileName=146831515118910.pdf&id=6388&source=OATD&language=en ; https://www.cris.uns.ac.rs/record.jsf?recordId=101472&source=OATD&language=en

►

Proučavane su koroziona postojanost i tendencija lepljenja različitih materijala u kontaktu sa tečnom Al–Si–Cu legurom. Ispitivanjem su obuhvaćeni čelik za rad na toplo, plazma… (more)

▼

Proučavane su koroziona postojanost i tendencija lepljenja različitih materijala u kontaktu sa tečnom Al–Si–Cu legurom. Ispitivanjem su obuhvaćeni čelik za rad na toplo, plazma nitrirani čelik i dupleks slojevi sa CrN, TiAlN, TiAlSiN i CrAlN prevlakama, različitog nivoa površinske hrapavosti. Za ispitivanja pomenutih fenomena primenjena je metoda izvlačenja, koja je unapređena kako bi se povećale njena tačnost i verodostojnost simulacije procesa livenja. Korozioni efekti su pojačani tako što su uzorci osim kratkog kontakta sa odlivkom zadržavani i u dužim periodima u kontaktu sa tečnom legurom (5 i 20 min). Uprkos opštim stavovima, za ispitivane materijale je ustanovljeno da su sile izvlačenja uzoraka iz Al–Si–Cu odlivaka nezavisne od njihovog hemijskog sastava. Uticaj hrapavosti je izražen kod uzoraka sa prevlakama kod kojih pri smanjenju hrapavosti dolazi do povećanja sile izvlačenja. Sve ispitane prevlake su sklone mehaničkom lepljenju Al–Si–Cu legure za svoje površine, ali sa aspekta korozije u tečnom metalu značajno prevazilaze performanse čelika i plazma nitriranog sloja. Duži kontakt livene legure sa površinama prevlaka uzrokovao je niže vrednosti sila izvlačenja, što je posledica oksidacije površina prevlaka. Ustanovljeno je da su ispitivane prevlake inertne ka tečnoj leguri aluminijuma. Međutim, dolazi do oksidacije i korozije materijala podloge kroz greške rasta koje su prisutne u prevlakama. Stečena znanja o identifikovanim mehanizmima habanja i propadanja zaštitnih slojeva prevlaka poslužiće daljem razvoju dupleks slojeva namenjenih za zaštitu alata za livenje pod pritiskom.

Corrosion resistance and soldering tendency of different materials in molten Al–Si–Cu alloy were studied. Hot-working tool steel, plasma nitrided steel and duplex layers with CrN, TiAlN, TiAlSiN and CrAlN top coatings, which were produced to various degree of surface roughness, were covered by the study. An ejection test was employed for investigation of the concerned phenomena. The ejection test was improved in order to increase its accuracy and the reliability of process simulation. Samples were examined in both short and extended periods of contact (5 and 20 min) with liquid casting. Casting solidification was extended in order to intensify the corrosion effects. Contrary to common findings, it was found that the ejection force of the investigated materials does not depend on their chemical composition. For the coated samples, a pronounced dependence of the ejection force on the surface roughness was found. The ejection force increases with decrease in surface roughness. All investigated coatings are prone to mechanical soldering by Al– Si–Cu alloy. Still, their corrosion resistance substantially exceeds the corrosion resistance of steel and plasma nitrided layer.…

Advisors/Committee Members: Kakaš Damir, Škorić Branko, Šiđanin Leposava, Vilotić Dragiša, Panjan Peter.

Subjects/Keywords: Alat za livenje pod pritiskom, legura aluminijuma, lepljenje livene legure, korozija, habanje, dupleks tretman, topografija površine; Corrosion resistance and soldering tendency of different materials in moltenAl–Si–Cu alloy were studied. Hot-working tool steel, plasma nitrided steel andduplex layers with CrN, TiAlN, TiAlSiN and CrAlN top coatings, which wereproduced to various degree of surface roughness, were covered by the study.An ejection test was employed for investigation of the concerned phenomena.The ejection test was improved in order to increase its accuracy and thereliability of process simulation. Samples were examined in both short andextended periods of contact (5 and 20 min) with liquid casting. Castingsolidification was extended in order to intensify the corrosion effects. Contraryto common findings, it was found that the ejection force of the investigatedmaterials does not depend on their chemical composition. For the coatedsamples, a pronounced dependence of the ejection force on the surfaceroughness was found. The ejection force increases with decrease in surfaceroughness. All investigated coatings are prone to mechanical soldering by Al–Si–Cu alloy. Still, their corrosion resistance substantially exceeds the corrosionresistance of steel and plasma nitrided layer. Longer exposure of coatedsamples to cast alloy induced lower ejection forces, which is a consequenceof coatings oxidation. It was found that the investigated coatings are inert toliquid aluminium. However, the underlying material undergoes oxidation andcorrosion through coating growth defects. The findings concerning the wearmechanisms of protective layers support further development of duplex layersintended for die casting tools protection.

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APA (6^th Edition):

Pal, T. (2016). Unapređenje kvaliteta alata za livenje pod pritiskom primenom tehnologija inženjerstva površina. (Thesis). University of Novi Sad. Retrieved from https://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija146831515118910.pdf?controlNumber=(BISIS)101472&fileName=146831515118910.pdf&id=6388&source=OATD&language=en ; https://www.cris.uns.ac.rs/record.jsf?recordId=101472&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):

Pal, Terek. “Unapređenje kvaliteta alata za livenje pod pritiskom primenom tehnologija inženjerstva površina.” 2016. Thesis, University of Novi Sad. Accessed January 23, 2021. https://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija146831515118910.pdf?controlNumber=(BISIS)101472&fileName=146831515118910.pdf&id=6388&source=OATD&language=en ; https://www.cris.uns.ac.rs/record.jsf?recordId=101472&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):

Pal, Terek. “Unapređenje kvaliteta alata za livenje pod pritiskom primenom tehnologija inženjerstva površina.” 2016. Web. 23 Jan 2021.

Vancouver:

Pal T. Unapređenje kvaliteta alata za livenje pod pritiskom primenom tehnologija inženjerstva površina. [Internet] [Thesis]. University of Novi Sad; 2016. [cited 2021 Jan 23]. Available from: https://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija146831515118910.pdf?controlNumber=(BISIS)101472&fileName=146831515118910.pdf&id=6388&source=OATD&language=en ; https://www.cris.uns.ac.rs/record.jsf?recordId=101472&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:

Pal T. Unapređenje kvaliteta alata za livenje pod pritiskom primenom tehnologija inženjerstva površina. [Thesis]. University of Novi Sad; 2016. Available from: https://www.cris.uns.ac.rs/DownloadFileServlet/Disertacija146831515118910.pdf?controlNumber=(BISIS)101472&fileName=146831515118910.pdf&id=6388&source=OATD&language=en ; https://www.cris.uns.ac.rs/record.jsf?recordId=101472&source=OATD&language=en

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

20. Mayatt, Adam. Structure-property relationships of an A36 steel alloy under dynamic loading conditions.

Degree: MS, Mechanical Engineering, 2012, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11022012-131659/ ;

► Structure-property quantification of an A36 steel alloy was the focus of this study in order to calibrate and validate a plasticity-damage model. The microstructural… (more)

Subjects/Keywords: A36 steel alloy; low carbon steel; Dynamic loading; Dynamic strain aging; Hopkinson; High rate testing; Material characteristics; Facture surfaces; A36 hot rolled plate; Plasticity damage model; Chemical composition by weight percent

…Composition by Weight % 4 Figure 2.1 Iron / carbon phase diagram. Note that the A36 steel alloy… …experimental stress-strain behavior for A36 steel alloy under varying strain rates at 293K… …20 3.10 Hot mount of as-received A36 steel alloy sample showing face (A), side… …21 3.11 Grains structure of A36 steel alloy from optical microscope; the light area is… …23 3.15 Load-displacement curve of notch A36 steel alloy specimens at two different…

10 more images…

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APA (6^th Edition):

Mayatt, A. (2012). Structure-property relationships of an A36 steel alloy under dynamic loading conditions. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-11022012-131659/ ;

Chicago Manual of Style (16^th Edition):

Mayatt, Adam. “Structure-property relationships of an A36 steel alloy under dynamic loading conditions.” 2012. Masters Thesis, Mississippi State University. Accessed January 23, 2021. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11022012-131659/ ;.

MLA Handbook (7^th Edition):

Mayatt, Adam. “Structure-property relationships of an A36 steel alloy under dynamic loading conditions.” 2012. Web. 23 Jan 2021.

Vancouver:

Mayatt A. Structure-property relationships of an A36 steel alloy under dynamic loading conditions. [Internet] [Masters thesis]. Mississippi State University; 2012. [cited 2021 Jan 23]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11022012-131659/ ;.

Council of Science Editors:

Mayatt A. Structure-property relationships of an A36 steel alloy under dynamic loading conditions. [Masters Thesis]. Mississippi State University; 2012. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11022012-131659/ ;

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