Electrochemical behaviour and corrosion of 18-8 austenitic stainless steel in sulphate solutions

S.S. Abd El Rehim, S.M. Abd El Haleem, M.Sh. Shalaby
{"title":"Electrochemical behaviour and corrosion of 18-8 austenitic stainless steel in sulphate solutions","authors":"S.S. Abd El Rehim,&nbsp;S.M. Abd El Haleem,&nbsp;M.Sh. Shalaby","doi":"10.1016/0376-4583(85)90113-X","DOIUrl":null,"url":null,"abstract":"<div><p>The electrochemical behaviour and corrosion of a commercial Egyptian 18-8 austenitic stainless steel was investigated in sulphuric acid and in sodium sulphate solutions using the potentiodynamic technique. In acid solution, the anodic polarization scans are characterized by the appearance of active, passive and transpassive transitions before oxygen evolution. The current densities corresponding to these three regions are increased by increasing either the acid concentration or the voltage scanning rate. The passive electrode does not regain its activity when subjected to cathodic treatment. Sensitization of the electrode enhances its susceptibility to intergranular corrosion.</p><p>In sodium sulphate solution, the polarization scans are characterized by the disappearance of the active region. On sensitization, a second transpassive region appears before oxygen evolution.</p></div>","PeriodicalId":22037,"journal":{"name":"Surface Technology","volume":"26 1","pages":"Pages 77-85"},"PeriodicalIF":0.0000,"publicationDate":"1985-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0376-4583(85)90113-X","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Surface Technology","FirstCategoryId":"1087","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/037645838590113X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3

Abstract

The electrochemical behaviour and corrosion of a commercial Egyptian 18-8 austenitic stainless steel was investigated in sulphuric acid and in sodium sulphate solutions using the potentiodynamic technique. In acid solution, the anodic polarization scans are characterized by the appearance of active, passive and transpassive transitions before oxygen evolution. The current densities corresponding to these three regions are increased by increasing either the acid concentration or the voltage scanning rate. The passive electrode does not regain its activity when subjected to cathodic treatment. Sensitization of the electrode enhances its susceptibility to intergranular corrosion.

In sodium sulphate solution, the polarization scans are characterized by the disappearance of the active region. On sensitization, a second transpassive region appears before oxygen evolution.

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
18-8奥氏体不锈钢在硫酸盐溶液中的电化学行为和腐蚀
用动电位法研究了埃及18-8奥氏体不锈钢在硫酸和硫酸钠溶液中的电化学行为和腐蚀。在酸性溶液中,阳极极化扫描的特征是在析氧前出现主动、被动和透传转变。通过增加酸浓度或电压扫描速率,可以增加这三个区域对应的电流密度。被动电极经阴极处理后不能恢复其活性。电极的敏化增强了其对晶间腐蚀的敏感性。在硫酸钠溶液中,极化扫描的特征是活性区消失。在敏化过程中,在析氧前出现第二个透传区。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
自引率
0.00%
发文量
0
期刊最新文献
Subject index Author index Electrochemical aspects of steel corrosion in sea water The impedance of the porous cadmium electrode in alkali Sorption-desorption studies on alumina pretreated with acids: I. The anionic dye orange II
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1