工程科学学报2018，Vol.40Issue(3)：366-372,7.DOI:10.13374/j.issn2095-9389.2018.03.013
SO2-4对含Cl-溶液中316 L奥氏体不锈钢钝化行为及点蚀行为的影响
Effect of SO2-4 on the passive and pitting behavior of 316 L austenite stainless steel in a Cl-containing solution
摘要
Abstract
The effect of SO2-4 on the passive and pitting behavior of 316L austenite stainless steel was investigated in a Cl--contai-ning solution using potentiodynamic polarization tests, electrochemical impedance spectroscopy tests, potentiostatic polarization tests, and galvanostatic polarization tests. In addition, scanning electron microscopy was used to observe the pitting morphology. The results show that the increased SO2-4 concentration increases the passive region of 316L, makes the pitting potential more positive, and decreases the current density, indicating an improved pitting resistance. However, the pitting morphology shows a more complicated trend, and the roughness of the pits increases with the increased SO2-4 concentration after pitting occurred.关键词
奥氏体不锈钢/硫酸根/氯离子/极化/点蚀Key words
austenite stainless steel/sulphate ion/chloride ion/polarization/pitting分类
矿业与冶金引用本文复制引用
唐娴,张雷,王竹,张子如,薛俊鹏,路民旭..SO2-4对含Cl-溶液中316 L奥氏体不锈钢钝化行为及点蚀行为的影响[J].工程科学学报,2018,40(3):366-372,7.基金项目
中央高校基本科研业务费专项资金资助项目(2302017FRF-IC-17-004) （2302017FRF-IC-17-004）
