Effect of hydrostatic pressure on the pitting corrosion of 17-4PH martensitic stainless steel

被引：5
|
作者：
Ma, Hongyu [1 ]
Liu, Rui [1 ]
Ke, Peiling [3 ]
Cui, Yu [2 ]
Liu, Li [1 ]
Wang, Fuhui [1 ]
机构：
[1] Northeastern Univ, Shenyang Natl Lab Mat Sci, Shenyang 110819, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Wencui Rd 62, Shenyang 110016, Peoples R China
[3] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Related Technol, Zhejiang Key Lab Marine Mat & Protect Technol, Ningbo 315201, Peoples R China
来源：
ENGINEERING FAILURE ANALYSIS | 2022年 / 138卷
基金：
中国国家自然科学基金;
关键词：
Martensitic stainless steel; Hydrostatic pressure; Pitting; Stochastic theory; SLIGHTLY ALKALINE-SOLUTIONS; POINT-DEFECT MODEL; PASSIVE FILMS; BEHAVIOR; NICKEL; ALLOYS; 304-STAINLESS-STEEL; RESISTANCE; ALUMINUM; GROWTH;
D O I：
10.1016/j.engfailanal.2022.106367
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The effects of hydrostatic pressure on the performance of passive film and the pitting growth process of 17-4PH martensitic stainless steel (17-4PH SS) were investigated by electrochemical measurements and stochastic theory. The results revealed that the growth rate and compactness of the passive film were changed by hydrostatic pressure, which inhibited the diffusion of point defects in the passive film and enhanced the protection performance of the passive film. The change of the performance of the passive film affects the pitting nucleation, metastable pitting process and reduces the transition probability from the metastable pitting to the stable pitting, which eventually leads to the decrease of pitting sensitivity of 17-4PH martensitic stainless steel.
引用
收藏
页数：15
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