四川大学学报：工程科学版2012，Vol.44Issue(3)：179-184,6.
316L不锈钢在西沙海洋大气环境下的腐蚀行为评估
Evaluation of Corrosion Behaviour of 316L Stainless Steel Exposed in Marine Atmosphere of Xisha Lslands
摘要
Abstract
The corrosion behaviour and principle of 316L stainless steel exposed with ditterent times in harsh marine atmosphere of Xisha Islands were investigated by means of cyclic anodic polarization （ CAP）, Electrochemical Impedance Spectroscopy （ EIS ） and Scanning Kelvin Probe（SKP）. The results showed that the exposure time has no significantly effect on both the corrosion process and passivation behaviour with respect to 316L stainless steel. The electric polarization curve experiments consistently indicate a characteris- tic of activated anodic dissolution. The protective function of the passive film is invalid and the passive film breakages on 316L stainless steel increase with the exposure time. The distribution of Kelvin potentials on the surfaces also decline with the exposure time, and the EKP distributions tend to be nonuniform with larger variance. These might be due to the breakdown of passive film in chloride-featured environment and then the occurrence of pitting and the rust products accumulated at the surfaces.关键词
不锈钢/大气腐蚀/点蚀/表面电位Key words
stainless steel/atmospheric corrosion/pitting/surface potential分类
金属材料引用本文复制引用
董超芳,骆鸿,肖葵,李朴华,李晓刚..316L不锈钢在西沙海洋大气环境下的腐蚀行为评估[J].四川大学学报：工程科学版,2012,44(3):179-184,6.基金项目
国家自然科学基金资助项目 （）
中央高校基本科研业务费专项资金资助项目 （）
