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Surface Modification Of Aluminum Alloys By Plasma Electrolytic Oxidation, Vahid Dehnavi
Surface Modification Of Aluminum Alloys By Plasma Electrolytic Oxidation, Vahid Dehnavi
Electronic Thesis and Dissertation Repository
Plasma Electrolytic Oxidation (PEO) is a surface treatment for the production of ceramic oxide coatings with great properties, such as high wear and corrosion resistance, on metal substrates, particularly aluminum and magnesium alloys. Formation of PEO coatings involves complex processes and mechanisms that are difficult to study. Currently, the PEO process is in a transition phase from research to commercial application, with a primary focus on the corrosion and wear protection of light alloys, and has recently generated interest as a promising surface treatment for biomedical applications.
To justify the industrial application of PEO, a more systematic and in-depth study …
Magnesium-Titanium Alloys For Biomedical Applications, Ilona Hoffmann
Magnesium-Titanium Alloys For Biomedical Applications, Ilona Hoffmann
Theses and Dissertations--Chemical and Materials Engineering
Magnesium has been identified as a promising biodegradable implant material because it does not cause systemic toxicity and can reduce stress shielding. However, it corrodes too quickly in the body. Titanium, which is already used ubiquitously for implants, was chosen as the alloying element because of its proven biocompatibility and corrosion resistance in physiological environments. Thus, alloying magnesium with titanium is expected to improve the corrosion resistance of magnesium.
Mg-Ti alloys with a titanium content ranging from 5 to 35 at.-% were successfully synthesized by mechanical alloying. Spark plasma sintering was identified as a processing route to consolidate the alloy …