油膜下局部腐蚀的探讨  

STUDY ON LOCALIZED CORROSION OF METAL UNDER OIL FILM

作　　者：黄桂芳[1] 吴翠兰[1] 靳九成[1] 李国希[1] 

机构地区：[1]湖南大学材料测试中心,长沙410082

出　　处：《腐蚀科学与防护技术》2000年第1期30-31,共2页Corrosion Science and Protection Technology

基　　金：金属腐蚀与防护国家重点实验室资助

摘　　要：采用丝束电极测试每一丝电极的电位、腐蚀电流大小，直观地探测油膜局部区域的电化学参数分布，研究油膜下的腐蚀情况．结果表明，各涂油丝束电极间存在电化学差异，油膜下存在腐蚀微电池，油膜下的腐蚀是分区进行的，阴极区受到保护，阳极区金属发生腐蚀．The electrochemical parameters and their distribution of oil film were surveyed directly and the corrosion conditions of metal under oil film was studied by measuring the potential and corrosion current of each wire using wire beam electrode. The results showed that there was corrosion cell beneath oil film where corrosion occurred locally, the metal in cathode area was protected and that in anode area was corroded.

关 键 词：油膜 局部腐蚀 丝束电极 腐蚀原电池 

分 类 号：TG174.42[金属学及工艺—金属表面处理]