铜在雨水中的腐蚀行为电化学研究  

CORROSION BEHAVIOR OF COPPER IN A SIMULATED RAINWATER

作　　者：张学元[1] 安百刚[1] 韩恩厚[1] 

机构地区：[1]中国科学院金属研究所金属腐蚀与防护国家重点实验室,沈阳110016

出　　处：《腐蚀科学与防护技术》2002年第5期257-259,共3页Corrosion Science and Protection Technology

基　　金：国家重点基金基础研究专项 (G19990 6 5 0 );国家自然科学基金资助项目 ( 5 0 10 10 11);中瑞合作项目

摘　　要：采用电化学动电位扫描和交流阻抗研究了铜在模拟斯德哥尔摩雨水中的腐蚀行为 .铜表面存在少量腐蚀产物时 ,铜在雨水中的腐蚀主要由电化学机制控制 ;随着腐蚀产物在铜表面的大量生成和沉积 ,存在腐蚀产物的区域和不存在腐蚀产物的区域 ,形成了电偶腐蚀电池 。Corrosion behavior of copper in a simulated rainwater of Stockholm area was studied by electrochemical impedance spectrum and polarization curves.The corrosion process of copper in the simulated rainwater was mainly controlled by the electrochemical process at first when there was a little corrosion product on the surface of copper.With the formation of corrosion product,the galvanic corrosion occurred on the surface of copper between different areas without and with corrosion product.The corrosion product on the surface of copper played a cathodic role in the galvanic cell.

关 键 词：电化学 铜 雨水 腐蚀产物 电偶腐蚀 

分 类 号：TG174.36[金属学及工艺—金属表面处理] TG172.6[金属学及工艺—金属学]