Effects of C, N-Codoped on the Corrosion Resistance of TiO2 Films Prepared by Plasma Surface Alloying and Thermal Oxidation Duplex Process

武汉理工大学学报-材料科学版(英文版), 2011, 26(3): 495-498. doi: 10.1007/s11595-011-0255-8

^1, , ^2, , ^3, , ^4,

1.Research Institute of Surface Engineering,Taiyuan University of Technology,Taiyuan 030024,China

2.Research Institute of Surface Engineering,Taiyuan University of Technology,Taiyuan 030024,China

3.Research Institute of Surface Engineering,Taiyuan University of Technology,Taiyuan 030024,China

4.Research Institute of Surface Engineering,Taiyuan University of Technology,Taiyuan 030024,China

基金项目: Project Innovation of the Graduate Students of Shanxi Province(No20093038) Funded by the National Natural Science Foundation of China(50771070)

Effects of C, N-Codoped on the Corrosion Resistance of TiO2 Films Prepared by Plasma Surface Alloying and Thermal Oxidation Duplex Process

WANG Hefeng ^1, , LI Xiuyan ^2, , LIU Weiyan ^3, , TANG Bin ^4,

1.Research Institute of Surface Engineering,Taiyuan University of Technology,Taiyuan 030024,China

2.Research Institute of Surface Engineering,Taiyuan University of Technology,Taiyuan 030024,China

3.Research Institute of Surface Engineering,Taiyuan University of Technology,Taiyuan 030024,China

4.Research Institute of Surface Engineering,Taiyuan University of Technology,Taiyuan 030024,China

Keywords： plasma surface alloying

C, N-codoped TiO2 films have been deposited onto stainless steel substrates using plasma surface alloying and thermal oxidation duplex process. Composition analysis shows that the films shield the substrates entirely. The TiO2 films are anatase in structure as characterized by X-ray diffraction. The electrochemical measurements show that the equilibrium corrosion potential positively shifts from -0.275 eV for bare stainless steel to -0.267 eV for C, N-codoped TiO2 coated stainless steel, and the corrosion current density decreases from 1.3 × 10-5 A/cm2 to 4.1 × 10-6 A/cm2. The corrosion resistance obtained by electrochemistry noise also reveals that the C, N-codoped TiO2 films provide good protection for stainless steel against corrosion in stimulated body fluid. The above results indicate that C, N-codoped TiO2 films deposited by plasma surface alloying and thermal oxidation duplex process are effective in protecting stainless steel from corrosion.

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材料期刊网

Effects of C, N-Codoped on the Corrosion Resistance of TiO2 Films Prepared by Plasma Surface Alloying and Thermal Oxidation Duplex Process

参考文献