埋地管线钢缝隙腐蚀的机理与防护研究进展  

Mechanism and Protection of Crevice Corrosion for Buried Steel Pipeline

作　　者：杨佳星[1] 赵平[1] 孙成[2] 许进[2] 

机构地区：[1]沈阳理工大学环境与化学工程学院,辽宁沈阳110159 [2]中国科学院金属研究所金属腐蚀与防护国家重点实验室,辽宁沈阳110016

出　　处：《全面腐蚀控制》2010年第4期16-19,10,共5页Total Corrosion Control

基　　金：国家自然科学基金项目(编号:50971128)

摘　　要：通过对埋地管线钢缝隙腐蚀的机理及防护进行综述,总结了阴极保护下缝内的电位电流分布规律,缝口保护电位、缝口尺寸、溶液导电率与缝内极化电位电流的关系及环境因素对缝隙腐蚀的影响。表明了埋地管线钢的缝隙腐蚀规律研究方面的重大意义。Mechanism and protection methods of crevice corrosion for buried steel pipeline were reviewed. The effects of the distribution of polarization current and potential, the seam potential, the seam size, the solution conductivity and the environmental factors on the crevice corrosion under the disbanded coatings were also summarized. It was showed that the research of the crevice corrosion has great importance to the practical working.

关 键 词：缝隙腐蚀 阴极保护 环境因素 

分 类 号：TG172.2[金属学及工艺—金属表面处理]