Abstract
Zirconia ceramic coatings on zirconium were prepared by micro-arc oxidation (MAO) method in mixed electrolyte of calcium glycerophosphate and calcium acetate. Effect of oxidation time on microstructure, element composition and phase composition of the coatings were analysised by X-ray diffraction, scanning electron microscopy, Raman spectroscopy, respectively. The elemental composition of the coatings included Zr, O, Ca, and P. As oxidation time increased, Ca and P content of coatings correspondingly increased, and content of Zr reduced. The fabricated coatings with thickness from 20 to 30 μm were composed of c-ZrO2 and t-ZrO2, only trace amounts of m-ZrO2 phase were detected. Owing to the porous structure and components of coatings, ZrO2 coatings prepared by this method may provide available possibilities applied to biomedical materials.
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