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The defense date of the thesis is 2011-08-23
The current date is 2019-03-24
URN etd-0818111-120554 Statistics This thesis had been viewed 1238 times. Download 0 times. Author Geng-Shuo He Author's Email Address No Public. Department Materials Engineering Year 2010 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 51 Title Effects of calcium chloride electrolyte on properties of micro-arc coatings on pure titanium Keyword Ti micro-arc oxide CaCl2 CaCl2 micro-arc oxide Ti Abstract Most of coatings on pure titanium were fabricated in a solution containing glycerophosphate and calcium acetate. In this study, porous ceramic oxide coatings were prepared on pure titanium by micro-arc oxidation (MAO) in an electrolytic solution containing calcium chloride and calcium glycerophosphate due to its low-cost and high conductivity.SEM and XRD were adopted to investigate the microstructure and phase composition of the coatings. The coatings were formed using the bipolar pulse anodization under different calcium chloride concentration at Ca/P ratio, various voltages and process duration. The effect of CaCl2 concentration and anodization duration on the formation of MAO size and morphology has been studied. Pore diameter , oxide layer thickness and roughness of MAO coatings increased with increasing CaCl2concentration due to its high conductivity than no CaCl2 addition. Above 0.03M CaCl2 concentration and 310V, the oxide layer thickness and roughness decreased owing to the probable separating. Perovskite and α-Ca3(PO)2 phase were found in oxide layers under above 280V condition, but hydroxyapatite phase was not found in the layer. Advisor Committee Chia-Jung Hu - advisor
Files Date of Defense 2011-07-25 Date of Submission 2011-08-23