| NiTi合金表面电化学氧化制备Ti02膜 |
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| 引用本文： | 程占保,苏向东,朱维东,李娜.NiTi合金表面电化学氧化制备Ti02膜[J].表面技术,2008,37(4):4-5,14. |
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| 作者姓名： | 程占保 苏向东 朱维东 李娜 |
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| 作者单位： | 1．贵州大学材料科学与冶金工程学院，贵州贵阳550003；2.贵州省材料结构与强度重点实验室，贵州贵阳550003,1．贵州科学院，贵州贵阳550002;2.北京航空航天大学理学院，北京100083,1．贵州大学材料科学与冶金工程学院，贵州贵阳550003；2.贵州省材料结构与强度重点实验室，贵州贵阳550003,1．贵州大学材料科学与冶金工程学院，贵州贵阳550003；2.贵州省材料结构与强度重点实验室，贵州贵阳550003 |
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| 基金项目： | 贵州省优秀科技教育人才省长专项资金项目[ (2005)214号) |
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| 摘 要： | 采用恒电流阳极氧化法在NiTi形状记忆合金(SMA)表面制备完整致密且耐腐蚀的Ti02膜。通过对NiTi SMA和纯Ti在稀HC1中的动电位阳极极化曲线的分析，得到了选择性脱Ni阳极氧化电流密度工艺参数。试验采用稀HC1体系，以该工艺参数进行阳极氧化处理5 min，在NiTi SMA表面制备出了完整致密的Ti02膜，并进行了其表面的SEM、XRD、XPS分析和NiTi SMA表面处理前后在模拟唾液fusayama中的对比腐蚀试验测试。结果表明：经阳极氧化处理的NiTi SMA表面形成了十几纳米厚的Tio2膜，且其耐蚀性有明显的提高。
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| 关 键 词： | NiTi形状记忆合金 极化曲线 电化学氧化 Ti02膜 耐蚀性 |
| 收稿时间： | 2008/3/24 0:00:00 |
| 修稿时间： | 2008/8/10 0:00:00 |
Preparation of Ti02 Film by Electrochemical Oxidation on the Surface of NiTi SMA |
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| CHENG Zhan_bao,SU Xiang-dong,ZHU Wei-dong and LI Na.Preparation of Ti02 Film by Electrochemical Oxidation on the Surface of NiTi SMA[J].Surface Technology,2008,37(4):4-5,14. |
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| Authors: | CHENG Zhan_bao SU Xiang-dong ZHU Wei-dong and LI Na |
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| Affiliation: | 1. College of Materials Science and Metallurgy Engineering of Guizhou University, Guiyang 550003, China;2. Guizhou Key Lab. for Structure of Materials and Mechanical Behavior, Guiyang 550003, China,1. Guizhou Academy of Sciences, Guiyang 550002, China;2. College of Science of Beijing University of Aeronautics and Astronautics, Beijing 100083, China,1. College of Materials Science and Metallurgy Engineering of Guizhou University, Guiyang 550003, China;2. Guizhou Key Lab. for Structure of Materials and Mechanical Behavior, Guiyang 550003, China and 1. College of Materials Science and Metallurgy Engineering of Guizhou University, Guiyang 550003, China;2. Guizhou Key Lab. for Structure of Materials and Mechanical Behavior, Guiyang 550003, China |
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| Abstract: | By the method of constant-current anodic oxydation, integrated and compact Ti02 films with anti-corrosion atmosphere will be prepared on the surface of NiTi SMA. By compared between the potentiodynamic polarization curves of NiTi SMA and pure Ti in HCl, it obtains technological parameter of current density while selective dissolution of Ni. In HCl system, under this technology parameter and anodic oxydation treatment for 5 minutes, integrated and compact Ti02 film on NiTi SMA surface was obtained and analyzed by SEM, XRD, XPS, given many contrast corrosion test in the simulant saliva fusayama for untreated and treated NiTi SMA . The result shows that tens of nanometers thickness anatase Ti02 film is formed at NiTi SMA surface after anodic oxidation, the corrosion resistance of the film is greatly improved. |
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| Keywords: | NiTi SMA Polarization curve Electrochemical oxidation Ti02 film Corrosion resistance |
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