Accelerated deterioration mechanism of 316L stainless steel in NaCl solution under the intermittent tribocorrosion process  

作　　者：Yingrui Liu Linlin Liu Shuyu Li Rujia Wang Peng Guo Aiying Wang Peiling Ke 

机构地区：[1]Key Laboratory of Marine Materials and Related Technologies,Zhejiang Key Laboratory of Marine Materials and Protective Technologies,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China [2]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China [3]College of Chemical Engineering,Zhejiang University of Technology,Hangzhou 310014,China

出　　处：《Journal of Materials Science & Technology》2022年第26期67-79,共13页材料科学技术（英文版）

基　　金：A-class pilot of the Chinese Academy of Sciences(No.XDA22010303);National Science Fund for Distinguished Young Scholars of China(No.52025014);CAS Interdisciplinary Innovation Team(No.292020000008);CASNST Joint Research Project(No.174433KYSB20200021);National Natural Science Foundation of China(No.51801226);K.C.Wong Education Foundation(No.GJTD-2019–13)。

摘　　要：In this research,the tribocorrosion behavior of 316L stainless steel in simulated seawater was investigated under continuous and intermittent sliding at open circuit potential.The tribocorrosion mechanism was discussed in terms of wear morphologies,mechanical property as well as chemical composition.Meanwhile,microstructure evolution inside the wear track and open circuit potential recorded after sliding were analyzed to quantify the repassivation kinetics and evaluate the impact of the regenerated passive film on wear.The results showed that the wear rate increased under intermittent sliding when the pause time is long enough to repassivate after sliding.Repeated sliding promoted the refinement of the grain inside the sliding area,which was beneficial to the generation of the thicker and more compact passive film inside the wear track.The ruptured passive film often acted as abrasives during subsequent sliding.Therefore,the accelerated material loss under intermittent sliding was attributed to the periodic mechanical removal of the thickened passive film and the enhanced abrasive wear inside the wear track.

关 键 词：Stainless steel TRIBOCORROSION Passive film REPASSIVATION Abrasive wear 

分 类 号：TG172.5[金属学及工艺—金属表面处理]