| CHENG Zhan_bao,SU Xiang-dong,ZHU Wei-dong,LI Na.Preparation of Ti02 Film by Electrochemical Oxidation on the Surface of NiTi SMA[J],37(4):4-5,14 |
| Preparation of Ti02 Film by Electrochemical Oxidation on the Surface of NiTi SMA |
| Received:March 24, 2008 Revised:August 10, 2008 |
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| DOI： |
| KeyWord:NiTi SMA Polarization curve Electrochemical oxidation Ti02 film Corrosion resistance |
| Author | Institution |
| CHENG Zhan_bao |
1. College of Materials Science and Metallurgy Engineering of Guizhou University, Guiyang , China;2. Guizhou Key Lab. for Structure of Materials and Mechanical Behavior, Guiyang , China |
| SU Xiang-dong |
1. Guizhou Academy of Sciences, Guiyang , China;2. College of Science of Beijing University of Aeronautics and Astronautics, Beijing , China |
| ZHU Wei-dong |
1. College of Materials Science and Metallurgy Engineering of Guizhou University, Guiyang , China;2. Guizhou Key Lab. for Structure of Materials and Mechanical Behavior, Guiyang , China |
| LI Na |
1. College of Materials Science and Metallurgy Engineering of Guizhou University, Guiyang , China;2. Guizhou Key Lab. for Structure of Materials and Mechanical Behavior, Guiyang , 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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