剥离涂层下管线钢腐蚀研究进展  

RESEARCH ON CORROSION OF PIPELINE STEEL BENEATH DISBONDED COATINGS

作　　者：贾思洋[1] 孙成[2] 王佳[1] 许进[2] 朱景龙[1] 王帅 张峰 

机构地区：[1]中国海洋大学化学化工学院,青岛266003 [2]中国科学院金属研究所,沈阳110016 [3]青岛市环境监测中心站,青岛266003 [4]青岛天人环境工程有限公司,青岛266010

出　　处：《腐蚀科学与防护技术》2007年第3期211-214,共4页Corrosion Science and Protection Technology

基　　金：国家自然科学基金(50271077及50499333)资助;科技部科技基础条件平台项目(2005DKA10400-CT-2-02)

摘　　要：综述了在有阴极保护的条件时剥离涂层下缝隙内电位电流的分布和化学环境的变化、阴极保护防止缝隙腐蚀的机理、微生物腐蚀的机理以及前人提出的关于剥离涂层下微生物腐蚀与阴极保护相互作用的规律,并展望了对于解决剥离涂层下微生物腐蚀难题需进一步的实验研究.Buried pipeline are routinely protected by the synergistic effect of coatings and cathodic protection （CP）, however,corrosion often occurs under disbonded coatings. This paper describes the distribution of potentials and current densities and the chemical changes in the presence of cathodic protection, the mechanism of cathodic protection against crevice corrosion, the mechanism of microbiologically influenced corrosion （MIC） of pipeline steel beneath disbonded coatings. Some viewpoints of forerunners about the interaction of CP and MIC and studies must be made for prevention of MIC beneath disbonded coating are also discussed in this paper.

关 键 词：剥离涂层 微生物腐蚀 硫酸盐还原菌 腐蚀机理 阴极保护 

分 类 号：TG178[金属学及工艺—金属表面处理]