One-step synthesis of petal-like apatite/titania composite coating on a titanium by micro-arc oxidation |
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| Authors: | Shimin Liu Xianjin Yang Zhenduo CuiShengli Zhu Qiang Wei |
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| Affiliation: | a School of Materials Science and Engineering, Tianjin University, Tianjin 300072, Chinab Business School, Tianjin University of Commerce, Tianjin 300134, Chinac Tianjin Key Laboratory of Composite and Functional Materials, Tianjin, 300072, China |
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| Abstract: | Petal-like apatite/titania (TiO2) coating was prepared on commercially pure titanium (Ti) by micro-arc oxidation in electrolyte containing calcium and phosphate for the first time. The surface morphology, crystalline structure, chemical composition and binding state of the apatite/TiO2 composite coating were characterized. The coating consists of a double-layer (apatite layer and TiO2 layer) structure. The average thickness of the inner TiO2 layer and the outer apatite layer is about 6 μm and 16 μm respectively. The outer apatite layer is porous and exhibits petal-like pattern. The apatite layer consists of hydroxyapatite (HA) and carbonate-apatite and the inner TiO2 layer consists of anatase and rutile. |
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| Keywords: | Micro-arc oxidation Petal-like apatite Composite materials Surfaces |
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