Effect of Chromium Content and Corrosion Resistance for Tinplate with Different Passivation Methods
SUN Jie1,2, AN Cheng-qiang1,2, TAN Yong2
1. School of Environmental and Chemical Engineering, Shenyang Institute of Technology, Shenyang, 110168, China; 2. Research Center for Corrosion and Protection of Metal, Northeast University, Shenyang, 110004, China
Abstract：The tests,which consisted of chemical analysis,X-ray Photoelectron Spectroscopy(XPS) and electrochemistry method,were carried out to investigate the corrosion resistance,chemical state of element chromium and the chromium content for tinplate using chemical and electrochemical passivation methods.It was shown that there existed Cr,O and Sn in the passivation film.The total chromium content obtained by electrochemical method was higher than that of the chemical method by the analysis of chemistry.The chemical value and the composition in chromate passivation film were different between chemical and cathode passivation.The composition of the chemical passivation film were Cr2O3 and Cr(OH)3,while the composition of the electrochemical passivation film were Cr2O3,Cr(OH)3 and Cr.The corrosion resistance of the passivation film obtained by electrochemistry method was better than that of the passivation film obtained by chemistry method.
孙杰, 安成强, 谭勇. 钝化方式对镀锡钢板耐蚀性及铬含量的影响[J]. 材料工程, 2010, 0(3): 25-28,92.
SUN Jie, AN Cheng-qiang, TAN Yong. Effect of Chromium Content and Corrosion Resistance for Tinplate with Different Passivation Methods. Journal of Materials Engineering, 2010, 0(3): 25-28,92.
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