镀锌层钼酸盐转化膜及其耐蚀机理  

Molybdate Conversion Coatings on Zinc Plate and Its Mechanism of Corrosion Resistance

作　　者：刘小虹[1] 颜肖慈[1] 

机构地区：[1]武汉大学化学与分子科学学院,武汉430072

出　　处：《电镀与环保》2002年第6期17-19,共3页Electroplating & Pollution Control

摘　　要：应用极化曲线和交流阻抗的方法研究了镀锌层钼酸盐转化膜在 5 %NaCl溶液中的耐蚀性。结果表明 ,钼酸盐转化膜处理能显著地提高镀锌层的耐腐蚀能力。分析了转化膜的成膜机理 ,并从转化膜对镀锌层在 5 %NaCl溶液中的阴、阳极反应历程的影响及交流阻抗行为的变化 ,分析了钼酸盐转化膜的耐蚀机理。The corrosion resistance of molybdate conversion coatings on zinc plate in 5% NaCl solution is investigated using potentiodynamic polarization and EIS techniques. The results show that the corrosion resistance of the treated zinc plate is remarkably improved. The mechanism of corrosion resistance is also analyzed in light of the effect of the conversion coatings on the cathod and anode reaction mechanism of zinc plate and the changes of EIS behavior in 5% NaCl solution.

关 键 词：镀锌层 钼酸盐 转化膜 耐蚀性 

分 类 号：TQ153.15[化学工程—电化学工业]