| Characterization of micro-arc ceramic coatings on Ti-2Al-2.5Zr alloy substrates |
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| 作者姓名： | HE Xiao WU Jihong SHEN Liru |
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| 作者单位： | [1]Department of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, China [2]Southwestern Institute of Physics, Chengdu 610041, China |
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| 基金项目： | 中国科学院高能所核分析技术重点实验室基金;教育部跨世纪优秀人才培养计划 |
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| 摘 要： | Titanium oxide coatings were synthesized on Ti-2Al-2.5Zr alloy substrates by micro-arc oxidation （MAO） technique. The surface features of the coatings were studied by scanning electron microscopy. The micro-arc discharge channels of the Ti-2Al-2.5Zr alloy decrease while the discharge channel size increases clearly with an increase in treating time. With an increase of the coating thickness the porous layer thickness increases apparently. Phase composition of the surface layers of the coatings was evaluated by X-ray diffraction and X-ray photoelectron spectroscopy. The results of XRD and XPS analysis show that the MAO coating mainly consists of anatase and rutile TiO2.
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| 关 键 词： | Ti-2Al-2.5Zr合金 陶瓷覆层 电子扫描显微镜 光电子光谱 X射线衍射 |
| 收稿时间： | 21 May 2006 |
| 修稿时间： | 2006-05-21 |
Characterization of micro-arc ceramic coatings on Ti-2Al-2.5Zr alloy substrates |
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| HE Xiao WU Jihong SHEN Liru.Characterization of micro-arc ceramic coatings on Ti-2Al-2.5Zr alloy substrates[J].Rare Metals,2007,26(5):414-419. |
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| Authors: | HE Xiao WU Jihong SHEN Liru |
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| Affiliation: | 1. School of Materials Science and Engineering, Southeast University, Nanjing 211189, China;2. Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189, China;3. Department of Physics and Materials Science, City University of Hong Kong, Tat Chee, Avenue, Kowloon, Hong Kong, China |
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| Abstract: | Titanium oxide coatings were synthesized on Ti-2Al-2.5Zr alloy substrates by micro-arc oxidation (MAO) technique. The surface features of the coatings were studied by scanning electron microscopy. The micro-arc discharge channels of the Ti-2Al-2.5Zr alloy decrease while the discharge channel size increases clearly with an increase in treating time. With an increase of the coating thickness the porous layer thickness increases apparently. Phase composition of the surface layers of the coatings was evaluated by X-ray diffraction and X-ray photoelectron spectroscopy. The results of XRD and XPS analysis show that the MAO coating mainly consists of anatase and rutile TiO2. |
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| Keywords: | micro-arc oxidation Ti-2Al-2 5Zr alloy scanning electron microscopy photoelectron spectroscopy X-ray diffraction |
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