磁阻探针研究碳钢在人造污染大气中的腐蚀行为  

MEASUREMENT OF CARBON STEEL CORROSION IN ARTIFICIALLY POLLUTED ATMOSPHERES BY RELUCTANCE PROBE

作　　者：佘坚[1] 宋诗哲[1] 

机构地区：[1]天津大学材料学院,天津300072

出　　处：《腐蚀科学与防护技术》2006年第1期9-11,共3页Corrosion Science and Protection Technology

基　　金：国家重点基础研究发展规划项目(G19990650)

摘　　要：建立了一套磁阻探针大气腐蚀检测系统,实现了模拟大气环境下金属腐蚀速率的快速检测.用该检测系统研究了1018碳钢在含有NaCl、Na2SO4、NaNO3、NaCl+Na2SO4和Na2SO4+NaNO3等污染环境下的早期大气腐蚀行为.结果表明:该检测系统可用于研究金属材料的大气腐蚀行为;相同条件下SO42-的腐蚀性最强,Cl-次之,NO3-最弱;混合污染介质对碳钢腐蚀行为的影响不是单个介质作用的简单叠加,存在较复杂的作用机理.An atmospheric corrosion measurement system of reluctance probe is established to realize quick measurement of metal corrosion in different simulated atmospheric conditions. This system is designed for studying the early stage＇ s atmospheric corrosion of 1018 carbon steel in atmospheres contaminated by NaCl. NaESO4. NaNO3. NaCl ＋ Na2SO4 and Na2SO4 ＋ NaNO3. The results showed that this new corrosion measurement system may be used to study the atmospheric corrosion of metallic materials. The relative corrosiveness of the pollutants was ranked in an order： SC4^2- 〉 Cl- 〉 NO3^- . The corrosion behavior of the steel in mixed media was different from that in single medium and the relerant corrosion mechanism is more complicated

关 键 词：磁阻探针 大气腐蚀 碳钢 

分 类 号：TG172.3[金属学及工艺—金属表面处理]