Effect of surface damage induced by cavitation erosion on pitting and passive behaviors of 304L stainless steel  

作　　者：Liang Li Yanxin Qiao Lianmin Zhang Aili Ma Enobong Felix Daniel Rongyao Ma Jian Chen Yugui Zheng 

机构地区：[1]School of Materials Science and Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China [2]CAS Key Laboratory of Nuclear Materials and Safety Assessment,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China [3]Shenyang National Research Center for Materials Science,Institute of Metals,Chinese Academy of Sciences,Shenyang 110016,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2023年第7期1338-1352,共15页矿物冶金与材料学报（英文版）

基　　金：financially supported of the National Natural Science Foundation of China (Nos.52101105 and 51975263)。

摘　　要：The corrosion behavior of 304L stainless steel(SS)in 3.5wt%NaCl solution after different cavitation erosion(CE)times was mainly evaluated using electrochemical noise and potentiostatic polarization techniques.It was found that the antagonism effect resulting in the passivation and depassivation of 304L SS had significant distinctions at different CE periods.The passive behavior was predominant during the incubation period of CE where the metastable pitting initiated at the surface of 304L SS.Over the rising period of CE,the 304L SS experienced a transition from passivation to depassivation,leading to the massive growth of metastable pitting and stable pitting.The depassivation of304L SS was found to be dominant at the stable period of CE where serious localized corrosion occurred.

关 键 词：cavitation erosion PITTING stainless steel electrochemical noise 

分 类 号：TG172[金属学及工艺—金属表面处理]