Research on Preparation of Titanium Dioxide Ceramic Film on Titanium Alloy Surface by Micro-arc Oxidation AITranslate

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Chinese Library Classification Number:TG146.23[金属学及工艺—金属材料]

Citation Information:

Titanium dioxide films （i. e. biomedical ceramic films） were prepared on titanium alloy surface by micro-arc oxidation,and their structure, morphology and elemental composition were analyzed by XRD, SEM and EDX. The influences of electrolyte pH and micro-arc oxidation voltage on micro-arc oxidation process were investigated. The results show that with electrolyte pH and micro-arc oxidation voltage in- creasing,the film is more homogenous and its surface pores are of larger number and size. The film is mainly composed of anatase and rutile Ti02 and the content of anatase phase increases with the increase of micro-arc voltage. The current density increases at first and then decreases with oxidation time increasing, and meanwhile it increases as electrolyte pH increases. The porous ceramic film can be obtained under the conditions of electrolyte pH value of 11 and micro-arc oxidation voltage of 500 V,and the obtained film has homogeneous-distribution pores.