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Preparation of hydroxyapatite-containing titania coating on titanium substrate by micro-arc oxidation |
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| Authors: | Jia-Hua Ni Feng-Ying Yan Lei Wang |
| Affiliation: | a School of Material Science and Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao 266042, China b Department of Prosthodontics, School of Stomatology and Affiliated Ninth People's Hospital, Medical College, Shanghai Jiao Tong University, 639 Zhizaoju Road, Shanghai 200011, China c Department of Prosthodontics, Affiliated Hospital, Medical College, Qingdao University, 16 Jiangsu Road, Qingdao 266003, China |
| Abstract: | Hydroxyapatite-containing titania coatings on titanium substrates were formed by micro-arc oxidation (MAO) in electrolyte containing calcium acetate monohydrate (CH3COO)2Ca·H2O) and sodium phosphate monobasic dihydrate (NaH2PO4·2H2O) using a pulse power supply. Scanning electron microscopy (SEM) with Energy dispersive X-ray spectrometer (EDX) and X-ray diffraction (XRD) were employed to characterize the microstructure, elemental composition and phase components of the coatings. The coatings were rough and porous, without apparent interface to the titanium substrates. All the oxidized coatings contained Ca and P as well as Ti and O, and the porous coatings were made up of anatase, rutile and hydroxyapatite. Such MAO films are expected to have significant applications as artificial bone joints and dental implants. |
| Keywords: | A Ceramics A Metals A Thin films D Microstructure |
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