subject:(Titanium)

Oregon State University

1. Yen, Wei-Liang. Synthesis of titanium dioxide nanorods using a continuous flow microreactor.

Degree: MS, Chemical Engineering, 2011, Oregon State University

URL: http://hdl.handle.net/1957/20863

► The primary goal of this thesis is to synthesize titanium dioxide nanorods using a continuous flow microreactor. Titania powder, one of the most important particulate… (more)

▼ The primary goal of this thesis is to synthesize titanium dioxide nanorods using a continuous flow microreactor. Titania powder, one of the most important particulate materials is used for many purposes owing to its excellent optical properties of a high refractive index leading to high hiding power and whiteness of titania paint, high chemical stability, and relatively low production cost. Particularly, one-dimensional inorganic nanostructures (rods, wires and tubes) of TiO₂ attract both relevant theoretical and technological interest, because they reveal a wide range of electrical and optical properties that depend on both size and shape. In our research, the growth of anatase TiO₂ nanorods was carefully controlled at low reaction temperature (around 100 °C) with oleic acid as a surfactant preventing hydrolysis of titania nuclei in undesired sites. Hinder hydrolysis of titanium alkoxide has been engaged and manipulated by means of a strategy that relies on the chemical modification of the titania precursor (Titanium tetraisopropoxide and Oleic acid) by the carboxylic acid, and on the use of suitable catalysts (trimethylamino-N-oxide dehydrate, TMAO) to promote crystallization in a continues flow microreactor. The X-ray diffraction and raman spectroscopy analysis show that TiO₂ produced from the microreactor matched with the products from the batch synthesis. Scanning Transmission electron Microscope (TEM) and High Resolution TEM images show that TiO₂ nanoparticles were rod shape, and Fourier transform of the HRTEM image indicates that mineral form of TiO₂ corresponds to the standard TiO2 anatase diffraction pattern. Thermal Gravimetric Analysis indicates that TiO₂ nanorods produced from the microreactor have more ligands attached to their surface than nanorods made by the batch reactor. The continuous flow microreactor can produce TiO₂ nanorods much faster (about 40 to 50 min of residence time) than a batch reactor (with reaction time around 24 hr), and the quality of the TiO₂ nanorods from the microreactor is as good as the nanorods from the conventional batch reactor. Advisors/Committee Members: Chang, Chih-Hung (advisor), Herman, Gregory S. (committee member).

Subjects/Keywords: Titanium Dioxide; Titanium dioxide

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APA (6^th Edition):

Yen, W. (2011). Synthesis of titanium dioxide nanorods using a continuous flow microreactor. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/20863

Chicago Manual of Style (16^th Edition):

Yen, Wei-Liang. “Synthesis of titanium dioxide nanorods using a continuous flow microreactor.” 2011. Masters Thesis, Oregon State University. Accessed February 15, 2019. http://hdl.handle.net/1957/20863.

MLA Handbook (7^th Edition):

Yen, Wei-Liang. “Synthesis of titanium dioxide nanorods using a continuous flow microreactor.” 2011. Web. 15 Feb 2019.

Vancouver:

Yen W. Synthesis of titanium dioxide nanorods using a continuous flow microreactor. [Internet] [Masters thesis]. Oregon State University; 2011. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/1957/20863.

Council of Science Editors:

Yen W. Synthesis of titanium dioxide nanorods using a continuous flow microreactor. [Masters Thesis]. Oregon State University; 2011. Available from: http://hdl.handle.net/1957/20863

University of New South Wales

2. Hayazi, Nur Farhana. Dehydrogenation and consolidation of titanium hydride powder using powder metallurgy routes.

Degree: Materials Science & Engineering, 2013, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/53483 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12178/SOURCE02?view=true

► TiH2 powder has been trialled as an alternative to Ti-powder to fabricate titanium-based products. To enhance the utilization of TiH2 powder, further understanding of the… (more)

▼ TiH2 powder has been trialled as an alternative to Ti-powder to fabricate titanium-based products. To enhance the utilization of TiH2 powder, further understanding of the dehydrogenation mechanism of TiH2, the effect of hydrogen on dehydrogenated and equal channel angular pressed (ECAP) samples and on the fabrication of titanium matrix composites (TMC) is critical.This research work analysed the phase transformation steps of TiH2 to Ti using high-temperature X-Ray Diffraction with the dehydrogenation step occurring under both isothermal and non-isothermal conditions. Crystallographic data was obtained through Rietveld analysis. Results showed that, with increasing temperature expansion occurred, which was negated by the phase transformations due to dehydrogenation. The sequence of TiH2 phase transformations were: delta−>delta’−>beta−>beta’−>alpha−>alpha’-phase. Further confirmation of the mechanistic steps was obtained through thermogravimetric analysis, transmission electron microscopy and selected area electron diffraction studies. The dehydrogenation reaction of compacted TiH2 powder was investigated in terms of four parameters, namely, heating rates, compaction pressures, temperatures and times, in order to optimize the dehydrogenation process. The hydrogen loss and bulk density decreased with increasing heating rate while the density and hardness improved with the increasing in temperature and time. TMCs were fabricated using TiH2 powder containing SiC or TiB2 as the reinforcement. In samples with SiC, when the sintering temperature was increased, the density, hardness and the reaction layer (TixSiyCz layer) were found to increase. However, the density and hardness decreased when TiB2 powder content increased. Hardness values were affected by the H2 content in the matrix and the reinforcement.Back-pressure ECAP on sintered TiH2 samples was carried out at 590°C using route C, where the sample is rotated 180° with focus on the hydrogen effect. Density of the ECAP samples reduced when the hydrogen content was increased. The presence of hydrogen improved the hardness and tensile strength, but the ductility was lowered. Dehydrogenation is very crucial step for TiH2 powder because of the phase transition from delta−>beta−>alpha-titanium, which is a critical step in the fabrication of TMC and titanium alloys from TiH2 powder. Advisors/Committee Members: Chan, Sammy, Materials Science & Engineering, Faculty of Science, UNSW.

Subjects/Keywords: Powder metallurgy; Titanium; Titanium hydride

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APA (6^th Edition):

Hayazi, N. F. (2013). Dehydrogenation and consolidation of titanium hydride powder using powder metallurgy routes. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/53483 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12178/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Hayazi, Nur Farhana. “Dehydrogenation and consolidation of titanium hydride powder using powder metallurgy routes.” 2013. Doctoral Dissertation, University of New South Wales. Accessed February 15, 2019. http://handle.unsw.edu.au/1959.4/53483 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12178/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Hayazi, Nur Farhana. “Dehydrogenation and consolidation of titanium hydride powder using powder metallurgy routes.” 2013. Web. 15 Feb 2019.

Vancouver:

Hayazi NF. Dehydrogenation and consolidation of titanium hydride powder using powder metallurgy routes. [Internet] [Doctoral dissertation]. University of New South Wales; 2013. [cited 2019 Feb 15]. Available from: http://handle.unsw.edu.au/1959.4/53483 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12178/SOURCE02?view=true.

Council of Science Editors:

Hayazi NF. Dehydrogenation and consolidation of titanium hydride powder using powder metallurgy routes. [Doctoral Dissertation]. University of New South Wales; 2013. Available from: http://handle.unsw.edu.au/1959.4/53483 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12178/SOURCE02?view=true

University of Akron

3. Hurtuk, Therese M. Investigating and Understanding the Behavior of a Titanium Alloy Gusset Plate Under Block Shear.

Degree: MSin Engineering, Civil Engineering, 2011, University of Akron

URL: http://rave.ohiolink.edu/etdc/view?acc_num=akron1312858731

► The need for infrastructure improvements is an increasing problem in the United States that cannot be ignored. Devastating events, such as the Minnesota I-35W bridge… (more)

▼ The need for infrastructure improvements is an increasing problem in the United States that cannot be ignored. Devastating events, such as the Minnesota I-35W bridge collapse in 2007, increased nationwide public concern of highway bridges and other infrastructure. Titanium is a non-corrosive metal stronger than industry steels and present in an increasing amount of applications. Substitution of this high-performance metal at structural joints or other critical regions on bridges could mitigate future disasters. However, prior to replacing existing steel gusset plates with titanium, the behavior under the specific condition must be understood. The reaction of a titanium member to both bridge-like loads and environment must be investigated, tested and analyzed to understand the response. The current research addresses one possible behavior due to loading conditions. The mechanical response of a gusset plate due to a tensile load under specifically designed geometric conditions that induce the block shear failure mode. Nine bolted gusset plates made of a titanium alloy were tested to failure. Experimental load-strain data was collected and compared with a non-linear material static finite element analysis. Once the analysis was verified through this comparison, the analysis output was used to understand the approximate stress distributions along the tension and shear failure planes present in block shear. Once the stress distribution was known, an equation could be developed to predict the block shear capacity of the titanium alloy gusset plate. To provide guidance in formulating an equation, a thorough literature review was conducted on steel bolted connections and steel block shear history. Then a parametric analysis of the current steel design equation was conducted to understand both the geometric and material variables within the equation. Finally, the basic material response of Ti-6 and general titanium properties were reviewed and discussed. To collectively understand the overall titanium connection behavior, the following objectives were formulated: 1. Revise the steel design block shear equation for gusset plates to apply to the titanium alloy.2. Observe intermediate mechanical behavior.3. Is the titanium alloy a worthwhile steel gusset plate replacement?4. Recommendations for future research. Advisors/Committee Members: Menzemer, Craig (Advisor), Srivatsan, T.S. (Advisor), Patnaik, Anil (Advisor).

Subjects/Keywords: Engineering; TITANIUM

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APA (6^th Edition):

Hurtuk, T. M. (2011). Investigating and Understanding the Behavior of a Titanium Alloy Gusset Plate Under Block Shear. (Masters Thesis). University of Akron. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=akron1312858731

Chicago Manual of Style (16^th Edition):

Hurtuk, Therese M. “Investigating and Understanding the Behavior of a Titanium Alloy Gusset Plate Under Block Shear.” 2011. Masters Thesis, University of Akron. Accessed February 15, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1312858731.

MLA Handbook (7^th Edition):

Hurtuk, Therese M. “Investigating and Understanding the Behavior of a Titanium Alloy Gusset Plate Under Block Shear.” 2011. Web. 15 Feb 2019.

Vancouver:

Hurtuk TM. Investigating and Understanding the Behavior of a Titanium Alloy Gusset Plate Under Block Shear. [Internet] [Masters thesis]. University of Akron; 2011. [cited 2019 Feb 15]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=akron1312858731.

Council of Science Editors:

Hurtuk TM. Investigating and Understanding the Behavior of a Titanium Alloy Gusset Plate Under Block Shear. [Masters Thesis]. University of Akron; 2011. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=akron1312858731

Oregon State University

4. York, James Michael. The effect of alpha phase morphology on the impact energy of commercial purity titanium.

Degree: MS, Mechanical Engineering, 1980, Oregon State University

URL: http://hdl.handle.net/1957/43043

► Samples of commercial purity titanium were heat treated above the beta transformation temperature and within the two phase alpha-beta phase field, followed by cooling at… (more)

Subjects/Keywords: Titanium

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APA (6^th Edition):

York, J. M. (1980). The effect of alpha phase morphology on the impact energy of commercial purity titanium. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/43043

Chicago Manual of Style (16^th Edition):

York, James Michael. “The effect of alpha phase morphology on the impact energy of commercial purity titanium.” 1980. Masters Thesis, Oregon State University. Accessed February 15, 2019. http://hdl.handle.net/1957/43043.

MLA Handbook (7^th Edition):

York, James Michael. “The effect of alpha phase morphology on the impact energy of commercial purity titanium.” 1980. Web. 15 Feb 2019.

Vancouver:

York JM. The effect of alpha phase morphology on the impact energy of commercial purity titanium. [Internet] [Masters thesis]. Oregon State University; 1980. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/1957/43043.

Council of Science Editors:

York JM. The effect of alpha phase morphology on the impact energy of commercial purity titanium. [Masters Thesis]. Oregon State University; 1980. Available from: http://hdl.handle.net/1957/43043

Oregon State University

5. Hernandez-Guerrero, Abel. A study of ignition and propagation of combustive synthesis reaction between titanium and carbon.

Degree: PhD, Mechanical Engineering, 1991, Oregon State University

URL: http://hdl.handle.net/1957/36787

► Combustive Synthesis or Self-Propagating High-Temperature Synthesis (SHS), is an energy-efficient combustion method of producing metallic, ceramic and composite materials from their constituent powders. This thesis… (more)

▼ Combustive Synthesis or Self-Propagating High-Temperature Synthesis (SHS), is an energy-efficient combustion method of producing metallic, ceramic and composite materials from their constituent powders. This thesis presents the results of an experimental and numerical evaluation of the propagation velocity for the SHS solid-solid reaction of titanium and carbon, as well as a study of the ignition process for the reaction. The experimental results show the dependency trend of the wave propagation speed on various parameters: diameter of the reactant compact, density of the compact, reactant mixture composition, and dilution of the reactant mixture with the inert product TiC. Conditions at which the reaction ceases to propagate in a self-supporting manner are also identified. This thesis attempts to generalize the existing experimental observations of the gasless SHS process by means of a dimensional analysis, thus offering a mechanistic framework within which future developments can be correlated. The implementation of the new reaction kinetics model of Kanury and some suitable dimensionless variables permit the main factors affecting the process to be embedded in a single key parameter, the Da number. This parameter includes the overall effects of thermal properties, stoichiometry of the reaction, carbon particle size, a process constant, a compression effect and the diffusion of one reactant through an intermediate complex. The study of propagation covers a broad range of possible Da numbers that could arise for different conditions found in experiments. A section in numerical calculations of the preheated length is included as well. Comparison of the numerical and experimental results for propagation are found to be in reasonable agreement, thus validating the suitability of the analytical model. The numerical study includes an examination of the ignition problem for a stoichiometric mixture, using a prescribed surface temperature boundary condition. For this condition, an ignition threshold curve is determined above which ignition will always occur and below which no ignition is possible. Advisors/Committee Members: Kanury, A. Murty (advisor).

Subjects/Keywords: Titanium

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APA (6^th Edition):

Hernandez-Guerrero, A. (1991). A study of ignition and propagation of combustive synthesis reaction between titanium and carbon. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/36787

Chicago Manual of Style (16^th Edition):

Hernandez-Guerrero, Abel. “A study of ignition and propagation of combustive synthesis reaction between titanium and carbon.” 1991. Doctoral Dissertation, Oregon State University. Accessed February 15, 2019. http://hdl.handle.net/1957/36787.

MLA Handbook (7^th Edition):

Hernandez-Guerrero, Abel. “A study of ignition and propagation of combustive synthesis reaction between titanium and carbon.” 1991. Web. 15 Feb 2019.

Vancouver:

Hernandez-Guerrero A. A study of ignition and propagation of combustive synthesis reaction between titanium and carbon. [Internet] [Doctoral dissertation]. Oregon State University; 1991. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/1957/36787.

Council of Science Editors:

Hernandez-Guerrero A. A study of ignition and propagation of combustive synthesis reaction between titanium and carbon. [Doctoral Dissertation]. Oregon State University; 1991. Available from: http://hdl.handle.net/1957/36787

Oregon State University

6. Lall, Prithvi Chand. Gamma-gamma directional correlation in titanium-46 (Ti⁴⁶).

Degree: PhD, Physics, 1961, Oregon State University

URL: http://hdl.handle.net/1957/49534

Subjects/Keywords: Titanium

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APA (6^th Edition):

Lall, P. C. (1961). Gamma-gamma directional correlation in titanium-46 (Ti⁴⁶). (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/49534

Chicago Manual of Style (16^th Edition):

Lall, Prithvi Chand. “Gamma-gamma directional correlation in titanium-46 (Ti⁴⁶).” 1961. Doctoral Dissertation, Oregon State University. Accessed February 15, 2019. http://hdl.handle.net/1957/49534.

MLA Handbook (7^th Edition):

Lall, Prithvi Chand. “Gamma-gamma directional correlation in titanium-46 (Ti⁴⁶).” 1961. Web. 15 Feb 2019.

Vancouver:

Lall PC. Gamma-gamma directional correlation in titanium-46 (Ti⁴⁶). [Internet] [Doctoral dissertation]. Oregon State University; 1961. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/1957/49534.

Council of Science Editors:

Lall PC. Gamma-gamma directional correlation in titanium-46 (Ti⁴⁶). [Doctoral Dissertation]. Oregon State University; 1961. Available from: http://hdl.handle.net/1957/49534

Oregon State University

7. Thompson, Milton Avery. Titanium and zirconium as electrodes for primary cells.

Degree: PhD, Chemistry, 1957, Oregon State University

URL: http://hdl.handle.net/1957/49913

Subjects/Keywords: Titanium

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APA (6^th Edition):

Thompson, M. A. (1957). Titanium and zirconium as electrodes for primary cells. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/49913

Chicago Manual of Style (16^th Edition):

Thompson, Milton Avery. “Titanium and zirconium as electrodes for primary cells.” 1957. Doctoral Dissertation, Oregon State University. Accessed February 15, 2019. http://hdl.handle.net/1957/49913.

MLA Handbook (7^th Edition):

Thompson, Milton Avery. “Titanium and zirconium as electrodes for primary cells.” 1957. Web. 15 Feb 2019.

Vancouver:

Thompson MA. Titanium and zirconium as electrodes for primary cells. [Internet] [Doctoral dissertation]. Oregon State University; 1957. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/1957/49913.

Council of Science Editors:

Thompson MA. Titanium and zirconium as electrodes for primary cells. [Doctoral Dissertation]. Oregon State University; 1957. Available from: http://hdl.handle.net/1957/49913

Oregon State University

8. Wood, F. W. (Floyd William), 1926-. A re-examination of the Ti-TiN phase system.

Degree: PhD, Mechanical and Metallurgical Engineering, 1973, Oregon State University

URL: http://hdl.handle.net/1957/44377

Subjects/Keywords: Titanium

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APA (6^th Edition):

Wood, F. W. (Floyd William), 1. (1973). A re-examination of the Ti-TiN phase system. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/44377

Chicago Manual of Style (16^th Edition):

Wood, F. W. (Floyd William), 1926-. “A re-examination of the Ti-TiN phase system.” 1973. Doctoral Dissertation, Oregon State University. Accessed February 15, 2019. http://hdl.handle.net/1957/44377.

MLA Handbook (7^th Edition):

Wood, F. W. (Floyd William), 1926-. “A re-examination of the Ti-TiN phase system.” 1973. Web. 15 Feb 2019.

Vancouver:

Wood, F. W. (Floyd William) 1. A re-examination of the Ti-TiN phase system. [Internet] [Doctoral dissertation]. Oregon State University; 1973. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/1957/44377.

Council of Science Editors:

Wood, F. W. (Floyd William) 1. A re-examination of the Ti-TiN phase system. [Doctoral Dissertation]. Oregon State University; 1973. Available from: http://hdl.handle.net/1957/44377

Oregon State University

9. Christensen, Hal Samuel. Titanium metal as the basis of a potential industry in the Pacific Northwest.

Degree: MS, Natural Resources, 1956, Oregon State University

URL: http://hdl.handle.net/1957/51198

Subjects/Keywords: Titanium

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APA (6^th Edition):

Christensen, H. S. (1956). Titanium metal as the basis of a potential industry in the Pacific Northwest. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/51198

Chicago Manual of Style (16^th Edition):

Christensen, Hal Samuel. “Titanium metal as the basis of a potential industry in the Pacific Northwest.” 1956. Masters Thesis, Oregon State University. Accessed February 15, 2019. http://hdl.handle.net/1957/51198.

MLA Handbook (7^th Edition):

Christensen, Hal Samuel. “Titanium metal as the basis of a potential industry in the Pacific Northwest.” 1956. Web. 15 Feb 2019.

Vancouver:

Christensen HS. Titanium metal as the basis of a potential industry in the Pacific Northwest. [Internet] [Masters thesis]. Oregon State University; 1956. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/1957/51198.

Council of Science Editors:

Christensen HS. Titanium metal as the basis of a potential industry in the Pacific Northwest. [Masters Thesis]. Oregon State University; 1956. Available from: http://hdl.handle.net/1957/51198

Michigan State University

10. Johnson, Raymond Hubert. Titanous solutions from metallic titanium.

Degree: MS, 1953, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:8152

Subjects/Keywords: Titanium

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APA (6^th Edition):

Johnson, R. H. (1953). Titanous solutions from metallic titanium. (Masters Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:8152

Chicago Manual of Style (16^th Edition):

Johnson, Raymond Hubert. “Titanous solutions from metallic titanium.” 1953. Masters Thesis, Michigan State University. Accessed February 15, 2019. http://etd.lib.msu.edu/islandora/object/etd:8152.

MLA Handbook (7^th Edition):

Johnson, Raymond Hubert. “Titanous solutions from metallic titanium.” 1953. Web. 15 Feb 2019.

Vancouver:

Johnson RH. Titanous solutions from metallic titanium. [Internet] [Masters thesis]. Michigan State University; 1953. [cited 2019 Feb 15]. Available from: http://etd.lib.msu.edu/islandora/object/etd:8152.

Council of Science Editors:

Johnson RH. Titanous solutions from metallic titanium. [Masters Thesis]. Michigan State University; 1953. Available from: http://etd.lib.msu.edu/islandora/object/etd:8152

University of Johannesburg

11. Maseko, Emily Tholakele. On development of ultrahard hafnium and titanium carbide materials.

Degree: 2012, University of Johannesburg

URL: http://hdl.handle.net/10210/7215

►

M.Tech.

A mixture of HfC and TiC powders and a (Hf,Ti)C powder have been hot pressed with 4wt% Ni. In the absence of Ni the… (more)

Subjects/Keywords: Hafnium; Titanium

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APA (6^th Edition):

Maseko, E. T. (2012). On development of ultrahard hafnium and titanium carbide materials. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/7215

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):

Maseko, Emily Tholakele. “On development of ultrahard hafnium and titanium carbide materials.” 2012. Thesis, University of Johannesburg. Accessed February 15, 2019. http://hdl.handle.net/10210/7215.

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

MLA Handbook (7^th Edition):

Maseko, Emily Tholakele. “On development of ultrahard hafnium and titanium carbide materials.” 2012. Web. 15 Feb 2019.

Vancouver:

Maseko ET. On development of ultrahard hafnium and titanium carbide materials. [Internet] [Thesis]. University of Johannesburg; 2012. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/10210/7215.

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

Council of Science Editors:

Maseko ET. On development of ultrahard hafnium and titanium carbide materials. [Thesis]. University of Johannesburg; 2012. Available from: http://hdl.handle.net/10210/7215

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

12. Sirivisoot, Sirinrath. Engineered Implantable Nanotechnology Sensor and Electrically-Controlled Release of Antibiotic and Anti-Inflammatory Drugs Using Polypyrrole Films Electrodeposited on Titanium for Orthopedic Implants.

Degree: PhD, Division of Engineering. Electrical Sciences and Computer Engineering, 2009, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:169/

► The development of electrochemical sensors and responsive drug delivery systems are current challenges in the field of orthopedics. Micro and nanotechnology enable the development of… (more)

▼ The development of electrochemical sensors and responsive drug delivery systems are current challenges in the field of orthopedics. Micro and nanotechnology enable the development of dynamic systems that integrate an external signal in response to a biological environment within a living system. This research included the development and examination of: (i) multiwalled carbon nanotubes (MWCNTs) grown out of anodized nanotubular titanium (MWCNT-Ti) to sense bone growth, biofilm formation, or scar tissue growth next to an implant in situ, and (ii) a biodegradable and electroactive conductive polymer (polypyrrole, PPy) to deliver antibiotic (penicillin/streptomycin) and anti-inflammatory (dexamethasone) drugs through the application of voltage to increase implant efficacy based on information from (i). Importantly, MWCNT-Ti enhanced the redox reaction of ferri/ferrocyanide and of the proteins synthesized by osteoblasts (bone-forming cells) remaining cytocompatible with osteoblasts and even enhancing osteoblast differentiation (alkaline phosphatase activity and calcium deposition) after 21 days of culture in vitro when compared to anodized nanotubular Ti and commercially pure Ti. Penicillin/streptomycin (P/S) and dexamethasone (Dex) were embedded simultaneously during the electrodeposition of PPy films on such materials. The PPy doped drugs enhanced osteoblast adhesion and proliferation, in vitro, whereas they inhibited fibroblast (fibrous-tissue forming cells) adhesion and proliferation when compared to conventional Ti. Both drugs (P/S and Dex) were released at about 80% of their initial concentration into PBS buffer after applying 5 cycles of cyclic voltammetry (CV) from -1 V to 1 V with scan rate of 100 mV/s. The bioactivity of P/S and Dex was confirmed by analyzing bacteria (Staphylococcus epidermidis) and macrophages (inflammatory and immune-response cells) functions in vitro, before and after electrically-triggered release. After 5 CV cycles, the P/S releases decreased the number of Staphylococcus epidermidis after 1 and 12 hours, while the Dex releases decreased the macrophage adhesion after 8 and 13 hours. Results showed that MWCNTs and conductive PPy were cytocompatibility with osteoblasts, and that these conducting bio-nanomaterials can be integrated with electronic devices for the development of an implantable closed-loop sensing and therapeutic system for orthopedic applications. Advisors/Committee Members: Webster, Thomas (director), Hurt, Robert (reader), Sun, Shouheng (reader), Mathiowitz, Edith (reader).

Subjects/Keywords: Anodized Titanium

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APA (6^th Edition):

Sirivisoot, S. (2009). Engineered Implantable Nanotechnology Sensor and Electrically-Controlled Release of Antibiotic and Anti-Inflammatory Drugs Using Polypyrrole Films Electrodeposited on Titanium for Orthopedic Implants. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:169/

Chicago Manual of Style (16^th Edition):

Sirivisoot, Sirinrath. “Engineered Implantable Nanotechnology Sensor and Electrically-Controlled Release of Antibiotic and Anti-Inflammatory Drugs Using Polypyrrole Films Electrodeposited on Titanium for Orthopedic Implants.” 2009. Doctoral Dissertation, Brown University. Accessed February 15, 2019. https://repository.library.brown.edu/studio/item/bdr:169/.

MLA Handbook (7^th Edition):

Sirivisoot, Sirinrath. “Engineered Implantable Nanotechnology Sensor and Electrically-Controlled Release of Antibiotic and Anti-Inflammatory Drugs Using Polypyrrole Films Electrodeposited on Titanium for Orthopedic Implants.” 2009. Web. 15 Feb 2019.

Vancouver:

Sirivisoot S. Engineered Implantable Nanotechnology Sensor and Electrically-Controlled Release of Antibiotic and Anti-Inflammatory Drugs Using Polypyrrole Films Electrodeposited on Titanium for Orthopedic Implants. [Internet] [Doctoral dissertation]. Brown University; 2009. [cited 2019 Feb 15]. Available from: https://repository.library.brown.edu/studio/item/bdr:169/.

Council of Science Editors:

Sirivisoot S. Engineered Implantable Nanotechnology Sensor and Electrically-Controlled Release of Antibiotic and Anti-Inflammatory Drugs Using Polypyrrole Films Electrodeposited on Titanium for Orthopedic Implants. [Doctoral Dissertation]. Brown University; 2009. Available from: https://repository.library.brown.edu/studio/item/bdr:169/

Dalhousie University

13. Holmes, Melanie. Electrochemical Behaviour of Ti(C,N) and TiC Cermets.

Degree: Master of Applied Science, Department of Process Engineering and Applied Science, 2012, Dalhousie University

URL: http://hdl.handle.net/10222/15345

► Three samples of Ti(C,N) were fabricated with 40 vol.% Ni3Al: Ti(C0.3N07), Ti(C0.5N0.5) and Ti(C0.7N0.3), as well as TiC with 10, 20, 30 and 40 vol.%… (more)

Subjects/Keywords: Cermets; Titanium carbonitride; titanium carbide; electrochemistry

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APA (6^th Edition):

Holmes, M. (2012). Electrochemical Behaviour of Ti(C,N) and TiC Cermets. (Masters Thesis). Dalhousie University. Retrieved from http://hdl.handle.net/10222/15345

Chicago Manual of Style (16^th Edition):

Holmes, Melanie. “Electrochemical Behaviour of Ti(C,N) and TiC Cermets.” 2012. Masters Thesis, Dalhousie University. Accessed February 15, 2019. http://hdl.handle.net/10222/15345.

MLA Handbook (7^th Edition):

Holmes, Melanie. “Electrochemical Behaviour of Ti(C,N) and TiC Cermets.” 2012. Web. 15 Feb 2019.

Vancouver:

Holmes M. Electrochemical Behaviour of Ti(C,N) and TiC Cermets. [Internet] [Masters thesis]. Dalhousie University; 2012. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/10222/15345.

Council of Science Editors:

Holmes M. Electrochemical Behaviour of Ti(C,N) and TiC Cermets. [Masters Thesis]. Dalhousie University; 2012. Available from: http://hdl.handle.net/10222/15345

University of Illinois – Chicago

14. Bhosle, Sai Shivraj. Surface Characterization and Cell-Material Interaction of Anodized Dental Implants.

Degree: 2017, University of Illinois – Chicago

URL: http://hdl.handle.net/10027/21863

► In this study, Ti-15Zr substrates were anodized using an electrochemical process in order to obtain a nanotubular surface. Three different electrochemical voltages (20 V, 30… (more)

Subjects/Keywords: Surface Modification; Titanium Alloy; Titanium-Zirconium; Nanotubes

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APA (6^th Edition):

Bhosle, S. S. (2017). Surface Characterization and Cell-Material Interaction of Anodized Dental Implants. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/21863

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):

Bhosle, Sai Shivraj. “Surface Characterization and Cell-Material Interaction of Anodized Dental Implants.” 2017. Thesis, University of Illinois – Chicago. Accessed February 15, 2019. http://hdl.handle.net/10027/21863.

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

MLA Handbook (7^th Edition):

Bhosle, Sai Shivraj. “Surface Characterization and Cell-Material Interaction of Anodized Dental Implants.” 2017. Web. 15 Feb 2019.

Vancouver:

Bhosle SS. Surface Characterization and Cell-Material Interaction of Anodized Dental Implants. [Internet] [Thesis]. University of Illinois – Chicago; 2017. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/10027/21863.

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

Council of Science Editors:

Bhosle SS. Surface Characterization and Cell-Material Interaction of Anodized Dental Implants. [Thesis]. University of Illinois – Chicago; 2017. Available from: http://hdl.handle.net/10027/21863

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

University of North Texas

15. Nandwana, Peeyush. Titanium Boride Formation and Its Subsequent Influence on Morphology and Crystallography of Alpha Precipitates in Titanium Alloys.

Degree: 2013, University of North Texas

URL: https://digital.library.unt.edu/ark:/67531/metadc407855/

► Over the last two decades there has been an increased interest in understanding the influence of trace boron additions in Ti alloys. These additions refine… (more)

▼ Over the last two decades there has been an increased interest in understanding the influence of trace boron additions in Ti alloys. These additions refine the prior β grain size in as-cast Ti alloys along with increasing their modulus and yield strength due to the precipitation of TiB. TiB also acts as a heterogeneous nucleation site for α precipitation and has been shown to influence the α phase morphology. B is completely soluble in liquid Ti but has a negligible solubility in both body centered cubic β and hexagonal close packed α phases of Ti. Thus, during solidification of hypoeutectic B containing alloys, B is rejected from β into the liquid where it reacts with Ti to form pristine single crystal whiskers of TiB. Despite a substantial amount of reported experimental work on the characterization of TiB precipitates, its formation mechanism and influence on α phase precipitation are still not clear. The current work is divided into two parts – (i) understanding the mechanism of TiB formation using first principles based density functional theory (DFT) calculations and (ii) elucidating how TiB influences the α phase morphology and crystallography in titanium alloys using electron microscopy techniques. TiB exhibits anisotropic growth morphology with [010] direction as its predominant growth direction and displays a hexagonal cross section with (100), (101), and (10) as the bounding planes. A high density of stacking faults has been experimentally observed on the (100) plane. The present study, by using DFT based nudged elastic band (NEB) calculations, elucidates for the first time that the diffusion of B through TiB is via an interstitial-assisted mechanism as opposed to vacancy-assisted mechanism hypothesized in literature. This one dimensional interstitial-assisted diffusion results in the anisotropic growth of TiB. In addition, the energetics of TiB- α interfaces was calculated to understand the hexagonal cross-section of TiB. The intimate mixing of B27 and Bf structures and their co-existence with stacking faults has been explained by calculating the interfacial energy of B27/Bf interfaces along with stacking fault formation energy. The boride precipitates have also been shown to modify the morphology of α phase from lath like to more equiaxed like. However, the influence of TiB on the crystallography of α precipitation has not been explored in great detail. The present study will clearly demonstrate, for the first time, the influence of various alloying elements present in the titanium alloy, on the resulting effect of B addition on α morphology and its crystallography in Ti alloys. Thus, the influence of B addition on α precipitation in two classes of commercial Ti alloys, i.e. β alloys and α + β alloys have been explored. It has been found that TiB nucleated α can either become equiaxed by a loss of Burgers orientation relationship (OR) with β or can retain the lath morphology in case of alloys containing a combination of Ti, Al and Mo. Advisors/Committee Members: Banerjee, Rajarshi, Srivilliputhur, Srinivasan G., Williams, James C., Collins, Peter (Peter C.), Mishra, Rajiv.

Subjects/Keywords: Titanium boride; morphology; crystallography; alpha; precipitates; titanium

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APA (6^th Edition):

Nandwana, P. (2013). Titanium Boride Formation and Its Subsequent Influence on Morphology and Crystallography of Alpha Precipitates in Titanium Alloys. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc407855/

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):

Nandwana, Peeyush. “Titanium Boride Formation and Its Subsequent Influence on Morphology and Crystallography of Alpha Precipitates in Titanium Alloys.” 2013. Thesis, University of North Texas. Accessed February 15, 2019. https://digital.library.unt.edu/ark:/67531/metadc407855/.

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

MLA Handbook (7^th Edition):

Nandwana, Peeyush. “Titanium Boride Formation and Its Subsequent Influence on Morphology and Crystallography of Alpha Precipitates in Titanium Alloys.” 2013. Web. 15 Feb 2019.

Vancouver:

Nandwana P. Titanium Boride Formation and Its Subsequent Influence on Morphology and Crystallography of Alpha Precipitates in Titanium Alloys. [Internet] [Thesis]. University of North Texas; 2013. [cited 2019 Feb 15]. Available from: https://digital.library.unt.edu/ark:/67531/metadc407855/.

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

Council of Science Editors:

Nandwana P. Titanium Boride Formation and Its Subsequent Influence on Morphology and Crystallography of Alpha Precipitates in Titanium Alloys. [Thesis]. University of North Texas; 2013. Available from: https://digital.library.unt.edu/ark:/67531/metadc407855/

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

Oklahoma State University

16. Jeongwook, Seo. Eletrochemical Reduction of Titanium Dioxide 3-D Periodic Structures.

Degree: School of Chemical Engineering, 2010, Oklahoma State University

URL: http://hdl.handle.net/11244/9638

► The conversion of rutile (TiO 2 ) to TiO is carried out using a molten-salt electrochemical process known as the FFC method, which was suggested… (more)

▼ The conversion of rutile (TiO 2 ) to TiO is carried out using a molten-salt electrochemical process known as the FFC method, which was suggested by Fray et al. In previous research, a dry-pressed rutile pellet is partially sintered and then electrochemically converted to Ti sponge. The Ti sponge can be crushed and sintered to produce a Ti billet for future machining operations. The guiding hypothesis of this research is that if the rutile is fabricated into a specific shape, the TiO 2 may be electrochemically converted to Ti directly while maintaining the desired shape. A three dimensional structure of TiO 2 is fabricated by robocasting, a process for assembling complex, three-dimensional (3-D) structures by extruding and patterning colloidal gels (pastes) followed by drying and sintering of the particles. Here, a TiO 2 paste is developed and evaluated by viscosity measurement. A 3-D lattice structure is fabricated using the robocasting method and the lattice structure is used as the feedstock for a molten CaCl 2 electrochemical reduction process. The reduction process is carried out using two different conditions. The control condition (the FFC method) uses a constant 3.2 V cell potential and allows current to vary as limited by the sample size and chemical reactions. The test condition is to maintain a constant current by varying the cell potential from 3.2 V to 4.2 V during the course of the electrochemical reaction. The control condition produces the expected chemical changes observed by others using the FFC method. The test condition yields an abundance of TiO nanofibers on the surface of the 3-D lattice. For both conditions, the reaction is terminated prior to conversion to Ti metal and the intermediate products are analyzed. The test condition consumes the CaCl 2 electrolyte. The electrolyte consumption is problematic for the notion of scale-up of this process, but the research produced some interesting TiO fibers that may prove worth the unfavorable reaction conditions. For instance, TiO fibers have not been reported in the literature, but may have application as catalysis material. Advisors/Committee Members: Smay, Jim (advisor), Johannes, AJ (committee member), Ramsey, Josh (committee member).

Subjects/Keywords: robocasting; titanium dioxide; titanium oxide fiber

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APA (6^th Edition):

Jeongwook, S. (2010). Eletrochemical Reduction of Titanium Dioxide 3-D Periodic Structures. (Thesis). Oklahoma State University. Retrieved from http://hdl.handle.net/11244/9638

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):

Jeongwook, Seo. “Eletrochemical Reduction of Titanium Dioxide 3-D Periodic Structures.” 2010. Thesis, Oklahoma State University. Accessed February 15, 2019. http://hdl.handle.net/11244/9638.

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

MLA Handbook (7^th Edition):

Jeongwook, Seo. “Eletrochemical Reduction of Titanium Dioxide 3-D Periodic Structures.” 2010. Web. 15 Feb 2019.

Vancouver:

Jeongwook S. Eletrochemical Reduction of Titanium Dioxide 3-D Periodic Structures. [Internet] [Thesis]. Oklahoma State University; 2010. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/11244/9638.

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

Council of Science Editors:

Jeongwook S. Eletrochemical Reduction of Titanium Dioxide 3-D Periodic Structures. [Thesis]. Oklahoma State University; 2010. Available from: http://hdl.handle.net/11244/9638

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

Deakin University

17. Patil, Prasad. One-hit machining of titanium alloy (Ti-6al-4v) wall component with trochoidal milling.

Degree: School of Engineering, 2015, Deakin University

URL: http://hdl.handle.net/10536/DRO/DU:30079720

This research will definitely give guidelines to industries associated with titanium slot machining. Advisors/Committee Members: Littlefair, Guy, Polishetty, Ashwin, Goldberg, Moshe.

Subjects/Keywords: Titanium; Titanium alloys; Machining; Milling machines

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APA (6^th Edition):

Patil, P. (2015). One-hit machining of titanium alloy (Ti-6al-4v) wall component with trochoidal milling. (Thesis). Deakin University. Retrieved from http://hdl.handle.net/10536/DRO/DU:30079720

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):

Patil, Prasad. “One-hit machining of titanium alloy (Ti-6al-4v) wall component with trochoidal milling.” 2015. Thesis, Deakin University. Accessed February 15, 2019. http://hdl.handle.net/10536/DRO/DU:30079720.

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

MLA Handbook (7^th Edition):

Patil, Prasad. “One-hit machining of titanium alloy (Ti-6al-4v) wall component with trochoidal milling.” 2015. Web. 15 Feb 2019.

Vancouver:

Patil P. One-hit machining of titanium alloy (Ti-6al-4v) wall component with trochoidal milling. [Internet] [Thesis]. Deakin University; 2015. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/10536/DRO/DU:30079720.

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

Council of Science Editors:

Patil P. One-hit machining of titanium alloy (Ti-6al-4v) wall component with trochoidal milling. [Thesis]. Deakin University; 2015. Available from: http://hdl.handle.net/10536/DRO/DU:30079720

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

Texas A&M University

18. Shiosaki, Dominic. Modeling of Tool Wear and Tool Fracture in Micromilling.

Degree: 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10445

► Micromachining is the next generation of precision material removal at the micro scale level due to the increase in miniaturization of commercial products. The applications… (more)

Subjects/Keywords: micromilling; titanium; aluminum

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APA (6^th Edition):

Shiosaki, D. (2012). Modeling of Tool Wear and Tool Fracture in Micromilling. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10445

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):

Shiosaki, Dominic. “Modeling of Tool Wear and Tool Fracture in Micromilling.” 2012. Thesis, Texas A&M University. Accessed February 15, 2019. http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10445.

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

MLA Handbook (7^th Edition):

Shiosaki, Dominic. “Modeling of Tool Wear and Tool Fracture in Micromilling.” 2012. Web. 15 Feb 2019.

Vancouver:

Shiosaki D. Modeling of Tool Wear and Tool Fracture in Micromilling. [Internet] [Thesis]. Texas A&M University; 2012. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10445.

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

Council of Science Editors:

Shiosaki D. Modeling of Tool Wear and Tool Fracture in Micromilling. [Thesis]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10445

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

Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

19. Saltidou, Kyriaki. Χωροχρονική δυναμική ηλεκτροχημικών δράσεων τοπικής κατάρρευσης-ανοδικής ανάπτυξης νανοδομημένων οξειδίων τιτανίου βάσει ενός μοντέλου πλεγματικών σημειακών ατελειών.

Degree: 2016, Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

URL: http://hdl.handle.net/10442/hedi/38356

► The research of this study was focused on the electrochemical behavior of nanostructured titanium dioxide (TiO2) in acid and halide solutions. In particular, the stability… (more)

▼ The research of this study was focused on the electrochemical behavior of nanostructured titanium dioxide (TiO2) in acid and halide solutions. In particular, the stability of passivity on Ti was examined in halide solutions whereas the electrochemical polymerization of aniline was studied on the Ti|TiO2 electrode under a variety of conditions. A series of TiO2 layers on Ti were formed galvanostatically in 0.5 M H2SO4 by applying different current densities up to a potential limit in order for oxides to be of the same thickness but of a different density in charge carriers, ND. The native oxide was removed prior to anodization by using either chemical etching or electrochemical reduction. The ND was estimated by using Mott-Schottky analysis. The passive oxide on Ti is an n – type semiconductor with oxygen vacancies being the dominant defects (donors). The TiO2 is not stable in aqueous halide solutions. It was shown that bromides exhibit a greater tendency to induce pitting corrosion on passive Ti than chlorides, in contrast to what is known for other metallic oxides. The bromide-induced stable localized breakdown of the passive oxide manifested itself in potentiodynamic current – potential curves by a sudden current increase at a critical breakdown potential, Eb. The Eb tends to decrease with increasing ND and the bromide activity. Additionally, it was found that the Eb increases with increasing potential scan rate, υ, inversely to what was observed for the native oxide on Ti, but in concert with corresponding relationships found for other metals/alloys and predicted by the point defect model (PDM). The physico-electrochemical processes that lead to the growth and breakdown of the Ti passive state as well as its higher susceptibility to pitting corrosion in the presence of bromides than chlorides can be understood by considering the PDM in conjunction with processes leading to an electrochemical modification of the surface oxide film due to the oxygen evolution reaction (OER). The OER affects the surface and bulk properties of the oxide film upon increasing the potential during the positive on- going potential scan. The extent of surface modifications was estimated on the basis of a cathodic peak assigned to the reduction of adsorbed oxo –, hydroxo–Ti species. Investigating the OER, the bromide electrochemical oxidation and aniline electropolymerization on Ti indicates that the donor density within the oxide influences drastically the kinetics of electrochemical processes occurring on the Ti|TiO2 electrode. By increasing the ND, a greater polymerization rate was achieved during the electrodeposition of thin polyaniline (PAn) films on anodized Ti surfaces from 1 M H2SO4 + x M An. Optimal conditions for the polymerization were found for relatively thin oxide layers prepared galvanostatically on Ti after the electrochemical reduction of the native oxide. The redox properties of PAn on Ti|TiO2 electrodes exhibit differences compared with PAn formed on other substrates. Moreover, they are affected by the electrochemcial…

Subjects/Keywords: Τιτάνιο; Διάβρωση; Titanium

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APA (6^th Edition):

Saltidou, K. (2016). Χωροχρονική δυναμική ηλεκτροχημικών δράσεων τοπικής κατάρρευσης-ανοδικής ανάπτυξης νανοδομημένων οξειδίων τιτανίου βάσει ενός μοντέλου πλεγματικών σημειακών ατελειών. (Thesis). Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ). Retrieved from http://hdl.handle.net/10442/hedi/38356

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):

Saltidou, Kyriaki. “Χωροχρονική δυναμική ηλεκτροχημικών δράσεων τοπικής κατάρρευσης-ανοδικής ανάπτυξης νανοδομημένων οξειδίων τιτανίου βάσει ενός μοντέλου πλεγματικών σημειακών ατελειών.” 2016. Thesis, Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ). Accessed February 15, 2019. http://hdl.handle.net/10442/hedi/38356.

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

MLA Handbook (7^th Edition):

Saltidou, Kyriaki. “Χωροχρονική δυναμική ηλεκτροχημικών δράσεων τοπικής κατάρρευσης-ανοδικής ανάπτυξης νανοδομημένων οξειδίων τιτανίου βάσει ενός μοντέλου πλεγματικών σημειακών ατελειών.” 2016. Web. 15 Feb 2019.

Vancouver:

Saltidou K. Χωροχρονική δυναμική ηλεκτροχημικών δράσεων τοπικής κατάρρευσης-ανοδικής ανάπτυξης νανοδομημένων οξειδίων τιτανίου βάσει ενός μοντέλου πλεγματικών σημειακών ατελειών. [Internet] [Thesis]. Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ); 2016. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/10442/hedi/38356.

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

Council of Science Editors:

Saltidou K. Χωροχρονική δυναμική ηλεκτροχημικών δράσεων τοπικής κατάρρευσης-ανοδικής ανάπτυξης νανοδομημένων οξειδίων τιτανίου βάσει ενός μοντέλου πλεγματικών σημειακών ατελειών. [Thesis]. Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ); 2016. Available from: http://hdl.handle.net/10442/hedi/38356

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

Hong Kong University of Science and Technology

20. Ching, Wai Kwong. Visible light photocatalysis : non-metal doped photocatalyst.

Degree: 2014, Hong Kong University of Science and Technology

URL: https://doi.org/10.14711/thesis-b1274129 ; http://repository.ust.hk/ir/bitstream/1783.1-83690/1/th_redirect.html

► Titanium dioxide (TiO₂) is widely used in hydrogen production, water and air purification, and solar cells. Pure TiO₂ cannot utilize the energy from visible light… (more)

▼ Titanium dioxide (TiO₂) is widely used in hydrogen production, water and air purification, and solar cells. Pure TiO₂ cannot utilize the energy from visible light region (< 3.0 eV) as its relatively large bandgap (3.0 eV and 3.2 eV). Energy in visible light region (45%) of solar energy is wasted and only 5% in UV region is utilized by pure TiO₂. Bandgap modification of TiO₂ can change the band structure and achieve visible light active photocatalysis. Transition metals doped TiO₂ had been synthesized to obtain visible light active photocatalyst. However, transition metals doped TiO₂ are usually synthesized by toxic or expensive precursors. Non-metal doped TiO₂ shows good photoactivity by using relative non-toxic precursors. A green, non-toxic and low-cost carbon source was used to prepare visible-light photocatalysts with enhanced photoactivity for oxidation of organic micropollutants in water. Carbon precursors including sucrose, glucose, and fructose, were investigated. Electron and chemical properties of the photocatalysts were investigated by X-ray diffraction (XRD), N₂ physisorption, UV/Vis diffusive reflectance spectroscopy (UV/Vis DRS) and X-ray Photoemisson spectroscopy. Carbon doped TiO₂ showed bandgap modification, increase in specific surface area, and surface group modification. Bandgap modification of TiO₂ absorbs of energy in visible light region which activate photocatalysis under visible light irradiation. It is the only necessary process for pure TiO₂ achieving photocatalysis under visible light irradiation. Larger specific area provides more active sites for the photocatalytic reaction. Surface group modification benefits electron transfer thus reduction in electron-hole recombination during photocatalysis. Low power light source 6 W fluorescent lamps were used instead of laboratory light source (e.g., 500 W high pressure mercury lamp or 250 W metal halide lamp) to demonstrate the practicability and high activity of the photocatalyst. Photocatalytic remediation of 2,4-dichlorophenol (2,4-DCP) and methylene blue in water were carried out in a laboratory reactor irradiated with the lamps equipped with UV filter. The results showed that the new catalyst even at low irradiation performed 28 times better than commercial P25 TiO₂ photocatalyst.

Subjects/Keywords: Photocatalysis; Titanium dioxide

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APA (6^th Edition):

Ching, W. K. (2014). Visible light photocatalysis : non-metal doped photocatalyst. (Thesis). Hong Kong University of Science and Technology. Retrieved from https://doi.org/10.14711/thesis-b1274129 ; http://repository.ust.hk/ir/bitstream/1783.1-83690/1/th_redirect.html

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):

Ching, Wai Kwong. “Visible light photocatalysis : non-metal doped photocatalyst.” 2014. Thesis, Hong Kong University of Science and Technology. Accessed February 15, 2019. https://doi.org/10.14711/thesis-b1274129 ; http://repository.ust.hk/ir/bitstream/1783.1-83690/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Ching, Wai Kwong. “Visible light photocatalysis : non-metal doped photocatalyst.” 2014. Web. 15 Feb 2019.

Vancouver:

Ching WK. Visible light photocatalysis : non-metal doped photocatalyst. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2014. [cited 2019 Feb 15]. Available from: https://doi.org/10.14711/thesis-b1274129 ; http://repository.ust.hk/ir/bitstream/1783.1-83690/1/th_redirect.html.

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

Council of Science Editors:

Ching WK. Visible light photocatalysis : non-metal doped photocatalyst. [Thesis]. Hong Kong University of Science and Technology; 2014. Available from: https://doi.org/10.14711/thesis-b1274129 ; http://repository.ust.hk/ir/bitstream/1783.1-83690/1/th_redirect.html

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

University of Hong Kong

21. Zhao, Jiangyuan. Cytotoxicity and antiseptic effects on PHMB-coated Ti.

Degree: MSin Dental Materials, 2016, University of Hong Kong

URL: http://hdl.handle.net/10722/236305

published_or_final_version

Dental Materials Science

Master

Master of Science in Dental Materials Science

Subjects/Keywords: Titanium - Therapeutic use

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APA (6^th Edition):

Zhao, J. (2016). Cytotoxicity and antiseptic effects on PHMB-coated Ti. (Masters Thesis). University of Hong Kong. Retrieved from http://hdl.handle.net/10722/236305

Chicago Manual of Style (16^th Edition):

Zhao, Jiangyuan. “Cytotoxicity and antiseptic effects on PHMB-coated Ti.” 2016. Masters Thesis, University of Hong Kong. Accessed February 15, 2019. http://hdl.handle.net/10722/236305.

MLA Handbook (7^th Edition):

Zhao, Jiangyuan. “Cytotoxicity and antiseptic effects on PHMB-coated Ti.” 2016. Web. 15 Feb 2019.

Vancouver:

Zhao J. Cytotoxicity and antiseptic effects on PHMB-coated Ti. [Internet] [Masters thesis]. University of Hong Kong; 2016. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/10722/236305.

Council of Science Editors:

Zhao J. Cytotoxicity and antiseptic effects on PHMB-coated Ti. [Masters Thesis]. University of Hong Kong; 2016. Available from: http://hdl.handle.net/10722/236305

University of Hong Kong

22. 陈树阳; Chen, Shuyang. Biological aspects of some novel Ti-based alloys.

Degree: MSin Dental Materials, 2015, University of Hong Kong

URL: Chen, S. [陈树阳]. (2015). Biological aspects of some novel Ti-based alloys. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b5573051 ; http://hdl.handle.net/10722/221008

published_or_final_version

Dental Materials Science

Master

Master of Science in Dental Materials Science

Subjects/Keywords: Titanium alloys - Biocompatibility

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APA (6^th Edition):

陈树阳; Chen, S. (2015). Biological aspects of some novel Ti-based alloys. (Masters Thesis). University of Hong Kong. Retrieved from Chen, S. [陈树阳]. (2015). Biological aspects of some novel Ti-based alloys. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b5573051 ; http://hdl.handle.net/10722/221008

Chicago Manual of Style (16^th Edition):

陈树阳; Chen, Shuyang. “Biological aspects of some novel Ti-based alloys.” 2015. Masters Thesis, University of Hong Kong. Accessed February 15, 2019. Chen, S. [陈树阳]. (2015). Biological aspects of some novel Ti-based alloys. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b5573051 ; http://hdl.handle.net/10722/221008.

MLA Handbook (7^th Edition):

陈树阳; Chen, Shuyang. “Biological aspects of some novel Ti-based alloys.” 2015. Web. 15 Feb 2019.

Vancouver:

陈树阳; Chen S. Biological aspects of some novel Ti-based alloys. [Internet] [Masters thesis]. University of Hong Kong; 2015. [cited 2019 Feb 15]. Available from: Chen, S. [陈树阳]. (2015). Biological aspects of some novel Ti-based alloys. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b5573051 ; http://hdl.handle.net/10722/221008.

Council of Science Editors:

陈树阳; Chen S. Biological aspects of some novel Ti-based alloys. [Masters Thesis]. University of Hong Kong; 2015. Available from: Chen, S. [陈树阳]. (2015). Biological aspects of some novel Ti-based alloys. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b5573051 ; http://hdl.handle.net/10722/221008

University of Hong Kong

23. Said, Mohamed Moustafa Mohamed Ali. Characterization of titanium surfaces with different treatment and aging processes.

Degree: M. Phil., 2012, University of Hong Kong

URL: Said, M. M. M. A.. (2012). Characterization of titanium surfaces with different treatment and aging processes. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4979968 ; http://dx.doi.org/10.5353/th_b4979968 ; http://hdl.handle.net/10722/181534

► The aims of this study were to, 1) investigate the surface characteristics of polished titanium plates/discs treated with acid-etching and ultraviolet irradiation (UV); and 2)… (more)

▼ The aims of this study were to, 1) investigate the surface characteristics of polished titanium plates/discs treated with acid-etching and ultraviolet irradiation (UV); and 2) investigate the change in surface characteristics of polished titanium plates/discs treated with acid-etching and UV irradiation after aging in air, saline and citric acid for six weeks. A total of one hundred and ninety-eight commercially pure grade two titanium plates and 50 titanium discs were prepared. Titanium samples were divided into four groups: 1) polished group, 2) polished and UV group, 3) acid-etched group and 4) acid-etched and UV group. Polishing was performed by abrasive silicon carbide paper grinding. UV treatment was performed by 15W germicidal UVC, 254 nm, for 48 h. Acid-etching was performed with 67% H2SO4 at 120 ºC for 75 s. The four groups were then subjected to an aging process for six weeks in sealed containers with three different media: air, physiologic saline and citric acid. They were analyzed immediately after treatment and after aging for surface characterization: topography, roughness, wettability, crystallinity, and chemistry. The polished surface showed relatively smooth surface with typical grooves from the grinding process. Acid-etching produced micro-roughened surface with sharp pits and ridges. The average surface roughness of polished, polished-UV was lower than that of the acid-etched and acid-etched-UV surfaces (p < 0.05). Storage of titanium in saline and citric acid did not provoke any morphological or roughness changes at micron scale level when compared to the samples stored in air. Immediately after preparation and treatment, the polished and acid-etched titanium surfaces appeared to be hydrophilic with similar contact angle values (p > 0.05). After UV treatment, there was a significant reduction in contact angles (superhydrophilic) in both surfaces (p < 0.05). After storage in air for six weeks, the contact angles of the four groups significantly increased (p < 0.05) and the surfaces converted to a hydrophobic state. In contrast to samples stored in air, samples stored in saline and citric acid revealed superhydrophilic surfaces regardless of the surface type. Titanium hydride crystals were present in the acid-etched and acid-etched-UV surfaces but not in the polished and polished-UV surfaces. Titanium tetrachloride crystals were present in saline-stored surfaces. The polished surface acquired significantly higher titanium and oxygen concentrations and lower carbon contaminants compared to acid-etched surface. UV treatment substantially decreased carbon contamination and increased the titanium and oxygen concentrations in the acid-etched groups (p < 0.05). After storage for six weeks in air, the four studied surfaces had no significant changes in the surface chemistry. Storage of the titanium samples in saline and citric acid relatively increased the carbon contamination and decreased titanium and oxygen concentrations. UV treatment may be an effective way to produce clean titanium surfaces… Advisors/Committee Members: Matinlinna, JP, Leung, KCM.

Subjects/Keywords: Dental implants.; Titanium.

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APA (6^th Edition):

Said, M. M. M. A. (2012). Characterization of titanium surfaces with different treatment and aging processes. (Masters Thesis). University of Hong Kong. Retrieved from Said, M. M. M. A.. (2012). Characterization of titanium surfaces with different treatment and aging processes. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4979968 ; http://dx.doi.org/10.5353/th_b4979968 ; http://hdl.handle.net/10722/181534

Chicago Manual of Style (16^th Edition):

Said, Mohamed Moustafa Mohamed Ali. “Characterization of titanium surfaces with different treatment and aging processes.” 2012. Masters Thesis, University of Hong Kong. Accessed February 15, 2019. Said, M. M. M. A.. (2012). Characterization of titanium surfaces with different treatment and aging processes. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4979968 ; http://dx.doi.org/10.5353/th_b4979968 ; http://hdl.handle.net/10722/181534.

MLA Handbook (7^th Edition):

Said, Mohamed Moustafa Mohamed Ali. “Characterization of titanium surfaces with different treatment and aging processes.” 2012. Web. 15 Feb 2019.

Vancouver:

Said MMMA. Characterization of titanium surfaces with different treatment and aging processes. [Internet] [Masters thesis]. University of Hong Kong; 2012. [cited 2019 Feb 15]. Available from: Said, M. M. M. A.. (2012). Characterization of titanium surfaces with different treatment and aging processes. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4979968 ; http://dx.doi.org/10.5353/th_b4979968 ; http://hdl.handle.net/10722/181534.

Council of Science Editors:

Said MMMA. Characterization of titanium surfaces with different treatment and aging processes. [Masters Thesis]. University of Hong Kong; 2012. Available from: Said, M. M. M. A.. (2012). Characterization of titanium surfaces with different treatment and aging processes. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4979968 ; http://dx.doi.org/10.5353/th_b4979968 ; http://hdl.handle.net/10722/181534

Baylor University

24. [No author]. Quantification of titanium dioxide nanoparticles in environmental matricies .

Degree: 2016, Baylor University

URL: http://hdl.handle.net/2104/9913

► A consistent analytical method incorporating sulfuric acid (H₂SO₄) digestion and ICP-MS quantification for titanium dioxide (TiO₂) was validated for 4 environmentally relevant matrices. The method… (more)

Subjects/Keywords: Nanoparticle. Titanium dioxide.

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APA (6^th Edition):

author], [. (2016). Quantification of titanium dioxide nanoparticles in environmental matricies . (Thesis). Baylor University. Retrieved from http://hdl.handle.net/2104/9913

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):

author], [No. “Quantification of titanium dioxide nanoparticles in environmental matricies .” 2016. Thesis, Baylor University. Accessed February 15, 2019. http://hdl.handle.net/2104/9913.

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

MLA Handbook (7^th Edition):

author], [No. “Quantification of titanium dioxide nanoparticles in environmental matricies .” 2016. Web. 15 Feb 2019.

Vancouver:

author] [. Quantification of titanium dioxide nanoparticles in environmental matricies . [Internet] [Thesis]. Baylor University; 2016. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/2104/9913.

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

Council of Science Editors:

author] [. Quantification of titanium dioxide nanoparticles in environmental matricies . [Thesis]. Baylor University; 2016. Available from: http://hdl.handle.net/2104/9913

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

Delft University of Technology

25. Van den Heijkant, R. Design of a titanium folding bike for the urban commuting market:.

Degree: 2010, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:227bc06e-4666-4055-8709-637afb7279a8

► Van Nicholas -The titanium bicycle company- wants to extend her portfolio with a full titanium folding bike that is focussed on the urban commuting market.… (more)

Subjects/Keywords: Titanium; Folding; Bicycle

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APA (6^th Edition):

Van den Heijkant, R. (2010). Design of a titanium folding bike for the urban commuting market:. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:227bc06e-4666-4055-8709-637afb7279a8

Chicago Manual of Style (16^th Edition):

Van den Heijkant, R. “Design of a titanium folding bike for the urban commuting market:.” 2010. Masters Thesis, Delft University of Technology. Accessed February 15, 2019. http://resolver.tudelft.nl/uuid:227bc06e-4666-4055-8709-637afb7279a8.

MLA Handbook (7^th Edition):

Van den Heijkant, R. “Design of a titanium folding bike for the urban commuting market:.” 2010. Web. 15 Feb 2019.

Vancouver:

Van den Heijkant R. Design of a titanium folding bike for the urban commuting market:. [Internet] [Masters thesis]. Delft University of Technology; 2010. [cited 2019 Feb 15]. Available from: http://resolver.tudelft.nl/uuid:227bc06e-4666-4055-8709-637afb7279a8.

Council of Science Editors:

Van den Heijkant R. Design of a titanium folding bike for the urban commuting market:. [Masters Thesis]. Delft University of Technology; 2010. Available from: http://resolver.tudelft.nl/uuid:227bc06e-4666-4055-8709-637afb7279a8

North Carolina State University

26. Newell, Andrew Phifer. Microstructure Studies of Ti-6Al-4V Near-Net Shape Structural Components as Prepared by the Arcam Electron Beam Melting Process.

Degree: MS, Materials Science and Engineering, 2009, North Carolina State University

URL: http://www.lib.ncsu.edu/resolver/1840.16/2516

► The Arcam electron beam melting (EBM) process is used for rapid prototyping of fully functional metallic parts. Arcam uses electron beam scanning technology similar to… (more)

Subjects/Keywords: TEM; titanium; Arcam

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APA (6^th Edition):

Newell, A. P. (2009). Microstructure Studies of Ti-6Al-4V Near-Net Shape Structural Components as Prepared by the Arcam Electron Beam Melting Process. (Thesis). North Carolina State University. Retrieved from http://www.lib.ncsu.edu/resolver/1840.16/2516

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):

Newell, Andrew Phifer. “Microstructure Studies of Ti-6Al-4V Near-Net Shape Structural Components as Prepared by the Arcam Electron Beam Melting Process.” 2009. Thesis, North Carolina State University. Accessed February 15, 2019. http://www.lib.ncsu.edu/resolver/1840.16/2516.

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

MLA Handbook (7^th Edition):

Newell, Andrew Phifer. “Microstructure Studies of Ti-6Al-4V Near-Net Shape Structural Components as Prepared by the Arcam Electron Beam Melting Process.” 2009. Web. 15 Feb 2019.

Vancouver:

Newell AP. Microstructure Studies of Ti-6Al-4V Near-Net Shape Structural Components as Prepared by the Arcam Electron Beam Melting Process. [Internet] [Thesis]. North Carolina State University; 2009. [cited 2019 Feb 15]. Available from: http://www.lib.ncsu.edu/resolver/1840.16/2516.

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

Council of Science Editors:

Newell AP. Microstructure Studies of Ti-6Al-4V Near-Net Shape Structural Components as Prepared by the Arcam Electron Beam Melting Process. [Thesis]. North Carolina State University; 2009. Available from: http://www.lib.ncsu.edu/resolver/1840.16/2516

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

University of Florida

27. Barrington, Carl R, III. The Effects of Magnetic Abrasive Finishing on the Surfaces of Tungsten Carbide Cutting Tools for Titanium Alloy Machining.

Degree: MS, Mechanical Engineering - Mechanical and Aerospace Engineering, 2017, University of Florida

URL: http://ufdc.ufl.edu/UFE0051950

► Tools used in the cutting of titanium alloys experience short tools lives. It has been shown that magnetic abrasive finishing (MAF) of the surfaces of… (more)

Subjects/Keywords: friction – maf – titanium

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APA (6^th Edition):

Barrington, Carl R, I. (2017). The Effects of Magnetic Abrasive Finishing on the Surfaces of Tungsten Carbide Cutting Tools for Titanium Alloy Machining. (Masters Thesis). University of Florida. Retrieved from http://ufdc.ufl.edu/UFE0051950

Chicago Manual of Style (16^th Edition):

Barrington, Carl R, III. “The Effects of Magnetic Abrasive Finishing on the Surfaces of Tungsten Carbide Cutting Tools for Titanium Alloy Machining.” 2017. Masters Thesis, University of Florida. Accessed February 15, 2019. http://ufdc.ufl.edu/UFE0051950.

MLA Handbook (7^th Edition):

Barrington, Carl R, III. “The Effects of Magnetic Abrasive Finishing on the Surfaces of Tungsten Carbide Cutting Tools for Titanium Alloy Machining.” 2017. Web. 15 Feb 2019.

Vancouver:

Barrington, Carl R I. The Effects of Magnetic Abrasive Finishing on the Surfaces of Tungsten Carbide Cutting Tools for Titanium Alloy Machining. [Internet] [Masters thesis]. University of Florida; 2017. [cited 2019 Feb 15]. Available from: http://ufdc.ufl.edu/UFE0051950.

Council of Science Editors:

Barrington, Carl R I. The Effects of Magnetic Abrasive Finishing on the Surfaces of Tungsten Carbide Cutting Tools for Titanium Alloy Machining. [Masters Thesis]. University of Florida; 2017. Available from: http://ufdc.ufl.edu/UFE0051950

University of Utah

28. Middlemas, Scott C. Energy-conscious production of Titania and Titanium powders from slag.

Degree: PhD, Metallurgical Engineering, 2014, University of Utah

URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3270/rec/870

► Titanium dioxide (TiO2) is used as a whitening agent in numerous domestic and technological applications and is mainly produced by the high temperature chlorideprocess. A… (more)

▼ Titanium dioxide (TiO2) is used as a whitening agent in numerous domestic and technological applications and is mainly produced by the high temperature chlorideprocess. A new hydrometallurgical process for making commercially pure TiO2 pigment is described with the goal of reducing the necessary energy consumption and CO2 emissions. The process includes alkaline roasting of titania slag with subsequent washing, HCl leaching, solvent extraction, hydrolysis, and calcination stages. The thermodynamics of the roasting reaction were analyzed, and the experimental parametersfor each step in the new process were optimized with respect to TiO2 recovery, final product purity, and total energy requirements. Contacting the leach solution with atertiary amine extractant resulted in complete Fe extraction in a single stage and proved effective in reducing the concentration of discoloring impurities in the final pigment to commercially acceptable levels. Additionally, a new method of producing Ti powders from titania slag is proposed as a potentially more energy efficient and lower cost alternative to the traditional Krollprocess. Thermodynamic analysis and initial experimental results validate the concept of reducing titanium slag with a metal hydride to produce titanium hydride (TiH2 ) powders, which are subsequently purified by leaching and dehydrided to form Ti powders. Theeffects of reducing agent type, heating time and temperature, ball milling, powder compaction, and eutectic chloride salts on the conversion of slag to TiH2 powders were determined. The purification of reduced powders through NH4Cl, NaOH, and HCl leaching stages was investigated, and reagent concentration, leaching temperature, and time were varied in order to determine the best conditions for maximum impurity removal and recovery of TiH2.A model plant producing 100,000 tons TiO2 per year was designed that would employ the new method of pigment manufacture. A comparison of the new process and the chloride process indicated a 25% decrease in energy consumption and CO2 emissions.For the Ti powder making process, a 10,000 tons per year model plant employing the metal hydride reduction was designed and a comparison with the Kroll process indicated potential for over 60% less energy consumption and 50% less CO2 emission.

Subjects/Keywords: Energy efficiency; Life cycle assessment; Pigment making; Titanium dioxide; Titanium processing; Titanium slag

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APA (6^th Edition):

Middlemas, S. C. (2014). Energy-conscious production of Titania and Titanium powders from slag. (Doctoral Dissertation). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3270/rec/870

Chicago Manual of Style (16^th Edition):

Middlemas, Scott C. “Energy-conscious production of Titania and Titanium powders from slag.” 2014. Doctoral Dissertation, University of Utah. Accessed February 15, 2019. http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3270/rec/870.

MLA Handbook (7^th Edition):

Middlemas, Scott C. “Energy-conscious production of Titania and Titanium powders from slag.” 2014. Web. 15 Feb 2019.

Vancouver:

Middlemas SC. Energy-conscious production of Titania and Titanium powders from slag. [Internet] [Doctoral dissertation]. University of Utah; 2014. [cited 2019 Feb 15]. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3270/rec/870.

Council of Science Editors:

Middlemas SC. Energy-conscious production of Titania and Titanium powders from slag. [Doctoral Dissertation]. University of Utah; 2014. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3270/rec/870

Indian Institute of Science

29. Nair, Shanoob Balachandran. Effect of Thermomechanical Processing on Microstructure And Microtexture Evolution in Titanium Alloys.

Degree: 2016, Indian Institute of Science

URL: http://hdl.handle.net/2005/2678

► The properties of titanium alloys are based on alloy compositions and microstructures that consist of mixtures of the two allotropic modifications of titanium, the low… (more)

▼ The properties of titanium alloys are based on alloy compositions and microstructures that consist of mixtures of the two allotropic modifications of titanium, the low temperature α (hcp) and the high temperature β (bcc) phases. This thesis deals with the hot working behaviour of three commercial titanium alloy compositions designated IMI834, Ti17 and Ti5553 with a focus and detailed analysis of the Ti5553 alloy. These alloys represent the differing uses of titanium alloys in the aerospace industry. IMI834 is a near α alloy used in high temperature creep resistant applications as compressor discs and blades in aeroengines. Ti17 is a high strength alloy α+β used at intermediate temperatures in fan and compressor discs of aeroengines, while Ti5553 is a high strength-high toughness metastable β alloy used in the undercarriages of aircraft. The three alloys have widely differing β transus temperatures (related to α phase stability) and compositions. Titanium alloys are vacuum arc melted and thermomechanically processed. This process involves ingot breakdown in β (bcc) phase, and subsequent thermomechanical processing in two-phase α+β (hcp+bcc) region at temperatures that typically involve volume fractions of α in lath or plate form ranging from 15% to about 30%. The thermomechanical processing breaks down lath α to spheroidal particles, a process known as globularisation. Chapter I of this thesis reviews the current understanding of the hot working of titanium alloys and microstructure evolution during the hot working process. Chapter II summarises the main experimental techniques used: the hot compression test, and subsequent microstructure and microtexture analysis by scanning electron microscopy and related electron back scattered diffraction techniques (EBSD), transmission electron microscopy and related precession electron diffraction techniques (PED) for orientation imaging. The starting structure in the α+β domain of hot work is generally not a random distribution of the 12 variant Burgers Orientation Relationship (BOR) between the α and β phases, (11̅0)β || (0001)α and <111>β || <112̅0>α . A variety of morphologies and distributions ranging from the typical colony structures of near α and α+β alloys to the fine distributions of variants arranged in a triangular fashion are observed with specific growth directions and habit planes. Chapter III describes a quantitative evaluation of α distribution that are typical of some of the starting structures for the hot working conditions used in this thesis, specifically in the Ti5553 alloy. For this purpose, a Matlab based script has been developed to measure the spatially correlated misorientation distribution. It was found that experimental spatially correlated misorientation distribution varies significantly from a random frequency for both pair and triplet wise distribution of α laths. The analysis of these structures by established techniques of analysis of self-accommodated structures based on strain energy minimisation shows that the observed variant… Advisors/Committee Members: Banerjee, Dipankar.

Subjects/Keywords: Titanium Alloys; Titanium Alloys Microstructure; Titanium Alloys Microtexture; Microstructure Evolution; Ti5553 Alloy; Materials Engineering

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APA (6^th Edition):

Nair, S. B. (2016). Effect of Thermomechanical Processing on Microstructure And Microtexture Evolution in Titanium Alloys. (Thesis). Indian Institute of Science. Retrieved from http://hdl.handle.net/2005/2678

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):

Nair, Shanoob Balachandran. “Effect of Thermomechanical Processing on Microstructure And Microtexture Evolution in Titanium Alloys.” 2016. Thesis, Indian Institute of Science. Accessed February 15, 2019. http://hdl.handle.net/2005/2678.

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

MLA Handbook (7^th Edition):

Nair, Shanoob Balachandran. “Effect of Thermomechanical Processing on Microstructure And Microtexture Evolution in Titanium Alloys.” 2016. Web. 15 Feb 2019.

Vancouver:

Nair SB. Effect of Thermomechanical Processing on Microstructure And Microtexture Evolution in Titanium Alloys. [Internet] [Thesis]. Indian Institute of Science; 2016. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/2005/2678.

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

Council of Science Editors:

Nair SB. Effect of Thermomechanical Processing on Microstructure And Microtexture Evolution in Titanium Alloys. [Thesis]. Indian Institute of Science; 2016. Available from: http://hdl.handle.net/2005/2678

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

University of Adelaide

30. Schumann, Evan John. Advanced processes for titanium sintering.

Degree: 2014, University of Adelaide

URL: http://hdl.handle.net/2440/101647

► A global objective of current research is to reduce the cost of manufacturing of titanium parts by improving the efficiency of near net-shape powder metallurgy… (more)

▼ A global objective of current research is to reduce the cost of manufacturing of titanium parts by improving the efficiency of near net-shape powder metallurgy (PM) technologies. These technologies are considered to be very promising as they eliminate waste and high machining costs. However, the cost of titanium components fabricated with PM remains relatively high due to the significant rate of energy consumption needed for various stages of PM, such as powder processing and sintering. Therefore, more research is needed to reduce the cost of production further, without compromising the mechanical properties and quality of the final product. The current research is focused on the two latest developments addressing the efficiency problems of current PM: (I) the use of hydrogen as a temporary alloying element in the production of titanium powder, and (II) the application of the Liquid Phase Sintering (LPS) method to enhance the densification of materials. The following aspects of these developments are studied in this thesis: the effect of powder characteristics obtained with the ball milling method and the influence of sintering parameters on the microstructure and mechanical properties of fabricated samples. The experimental approach includes the following stages: (a) synthesis of TiH₂ from a commercial titanium sponge; (b) particle size reduction through ball milling; and (c) hot press sintering with and without adding a liquid aluminium phase. The TiH₂ powders were investigated for particle size and morphology by laser granulometry and Scanning Electron Microscopy (SEM), and the dehydrogenation kinetic was studied using Differential Scanning Calorimetry, The metallic impurities introduced during ball milling were measured through Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). Sintered specimens were characterised by density using the Archimedes immersion method, and the microstructure and phase composition were examined using SEM Energy Dispersion Spectroscopy (EDS) and X-Ray diffraction (XRD). The hardness of pure titanium specimens was tested by microindentation and the flexural strength of selected LPS specimens was determined using the 3-point bending test. A relationship between the ball milling time and TiH₂ particle size alongside the level of contamination of the Ti powder were established. The influence of the particle size and sintering temperatures, specifically in the bottom range concerned with the energy efficiency, on the densification and dehydrogenation of TiH₂ was studied. The effect of an aluminium phase on the minimum sintering temperatures and quality of the fabricated samples was investigated by varying the concentration of liquid aluminium during hot press sintering. The outcomes of the current research demonstrated that: ◆ the size of TiH₂ powder after ball milling greatly increases the density and dehydrogenation of the sintered specimens; ◆ the dehydrogenation is seen to be delayed by pressure assisted sintering inside a graphite mould; ◆ ball milling leads to the… Advisors/Committee Members: Kotousov, Andrei Georgievich (advisor), School of Mechanical Engineering (school).

Subjects/Keywords: titanium; titanium hydride; liquid phase sintering; powder metallurgy; titanium aluminide; hot press sintering

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APA (6^th Edition):

Schumann, E. J. (2014). Advanced processes for titanium sintering. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/101647

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):

Schumann, Evan John. “Advanced processes for titanium sintering.” 2014. Thesis, University of Adelaide. Accessed February 15, 2019. http://hdl.handle.net/2440/101647.

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

MLA Handbook (7^th Edition):

Schumann, Evan John. “Advanced processes for titanium sintering.” 2014. Web. 15 Feb 2019.

Vancouver:

Schumann EJ. Advanced processes for titanium sintering. [Internet] [Thesis]. University of Adelaide; 2014. [cited 2019 Feb 15]. Available from: http://hdl.handle.net/2440/101647.

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

Council of Science Editors:

Schumann EJ. Advanced processes for titanium sintering. [Thesis]. University of Adelaide; 2014. Available from: http://hdl.handle.net/2440/101647

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

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