电镀锌钝化处理耐蚀效果的电化学评估  

Evaluation of anticorrosion effect of passivated zinc electroplating coating by electrochemical methods

作　　者：吴育忠[1] 李伟善[1] 马冲 梁碧敏 左正勋 吕东生[1] 

机构地区：[1]华南师范大学化学与环境学院,广东广州510006 [2]佛山南海美德耐化工原料有限公司,广东佛山528247

出　　处：《电镀与涂饰》2008年第6期36-38,共3页Electroplating & Finishing

摘　　要：采用线性极化电阻、开路电位及阳极极化曲线等电化学方法,评估了锌镀层经3种不同钝化液处理后在w=1%的NaCl溶液中的耐蚀性。结果表明,3种电化学方法测得的钝化膜耐蚀性与中性盐雾试验的结果相符,能够用于快速有效地评价电镀锌钝化处理的耐腐蚀效果。The corrosion resistance of Zn plating coating passivated with three different passivation baths in 1% （mass fraction） NaCl solution was evaluated by electrochemical methods, such as linear polarization resistance, open circuit potential and anode polarization curve. The results showed that the testing results obtained by the three electrochemical methods are in good agreement with that obtained by neutral salt spray （NSS） test. Thus the electrochemical methods can be used in the evaluation of anticorrosion effect ofpassivation for Zn plating coatings fast and effectively.

关 键 词：镀锌 三价铬钝化 耐蚀性 电化学 

分 类 号：TG178[金属学及工艺—金属表面处理] TQ153.15[金属学及工艺—金属学]