Fe-Cr-Ni电镀工艺和电化学腐蚀研究  

Study on Process of Fe-Cr-Ni Eelectroplated Coating and Electrochemical Corrosion Performance

作　　者：席艳君[1] 刘泳俊[1] 王志新[1] 卢金斌[1] 

机构地区：[1]中原工学院材料与化工学院,河南郑州450007

出　　处：《表面技术》2009年第5期83-85,共3页Surface Technology

基　　金：河南省教育厅科技攻关项目(2007430028)

摘　　要：研究了不同工艺条件对Fe-Cr-N i电镀层的沉积速率和腐蚀性能的影响。用电化学方法进行镀层的沉积,用动电位扫描进行镀层性能的测试,用正交实验法对工艺条件进行了优化。结果表明,Fe-Cr-N i合金和原始基体合金在3%NaC l溶液中均没有明显的钝化现象,但镀层显示了一定的延缓腐蚀的作用,且通过综合平衡分析得出最优方案,即电流密度12A/dm2、温度25℃、pH值2,在此条件下获得的镀层耐蚀性最佳。The effect of technological conditions on deposition rate and electrochemical corrosion was investigated. The coating was prepared by electrochemical method ; The performance carried out in 3.5 % NaCl, and the technological conditions was optimized by orthogonal method. The results show that the coating and the substrate don＇t exhibit passivity, but the coating can slow up the corrosion rate. The optimization project is achieved, i.e. the current density is 12A/dm^2 , temperature is 25℃, and pH value is 2.

关 键 词：Fe-Cr-Ni 电镀层 电化学腐蚀 腐蚀行为 沉积速率 

分 类 号：TQ153.2[化学工程—电化学工业]