Influence of oxidation time on microstructure and composition of micro-arc oxidation coatings formed on zirconium. (May 2014)

• Record Type: Journal Article
• Authors: Lan, R.; Dong, L.; Wang, C.; Liang, T.; Tian, J.
• Is Part Of: Materials research innovations. Volume 18(2014)Supplement 2
• Page Start: 123
• Page End: 127
• Publication Date: 2014-05
• Subjects: Zirconia coatings, -- Micro-arc oxidation, -- Microstructure, -- Zirconium; Materials -- Research -- Periodicals; Matériaux -- Recherche -- Périodiques; 620.1105
• DOI: 10.1179/1432891714Z.000000000389
• Languages: English
• ISSNs: 1432-8917

Abstract

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.