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C,N-codoped TiO 2 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 TiO 2 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 TiO 2 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 TiO 2 films provide good protection for stainless steel against corrosion in stimulated body fluid.The above results indicate that C,N-codoped TiO 2 films deposited by plasma surface alloying and thermal oxidation duplex process are effective in protecting stainless steel from corrosion.
C, N-codoped TiO 2 films have been deposited onto stainless steel substrates using plasma surface alloying and thermal oxidation duplex process. Compositional analysis shows that the films shield the substrate entirely. The TiO 2 films are anatase in characterized as 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 TiO 2 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 TiO 2 films provide good protection for stainless steel against corrosion in stimulated body fluid. The above results indicate that C , N-codoped TiO 2 films deposited by plasma surface alloying and thermal oxidation duplex process are effective in protecting stainless steel from corrosion.