利用动电位再活化法研究外加阴离子对铁钝化过程的影响  

POTENTIO DYNAMIC REACTIVATION METHOD FOR STUDYING EFFECTS OF ANION ON IRON PASSIVATING PROCESSES

作　　者：王超[1] 柳昌义[2] 李瑛[2] 陈慎豪[2] 李金良[1] 

机构地区：[1]徐州师范学院化学系,徐州221009 [2]山东大学化学系,济南250100

出　　处：《腐蚀科学与防护技术》1993年第3期158-162,共5页Corrosion Science and Protection Technology

基　　金：中国科学院腐蚀科学开放研究实验室资助

摘　　要：本文运用动电位再活化法研究了酸性溶液中阴离子对铁钝化过程的影响。在给定实验条件下,卤素离子对铁钝化膜的影响以Br^->Cl^-8>F^-、I^-的顺序递减;NO_3^-可以抑制Cl^-对阳极钝化区铁电极表面的孔蚀。扫描电镜实验得到相同结果。动电位再活化法是一种研究侵蚀性阴离子和抑制剂对金属钝化膜作用的快速而有效的方法。The potentiodynamic reactivation method is used to investigate the effects of anion on the passivation of iron in acidic solutions. It is confirmed that under given conditions the effects of halide ions on the passive layer of iron electrode decrease in the sequence of Br^-> Cl~> F^- or I^-, and that NO_3^- inhibits pitting of Cl^- on iron surface in the potential region of anodic passivation. These results are supported by SEM experiments. It is believed that the PR method is rapid and effetive for detecting the influences of aggressive anion and inhibitor on the passivating processes of iron.

关 键 词：动电位再活化 铁电极 钝化 阴离子 

分 类 号：TG171[金属学及工艺—金属表面处理]