Synergistic effect of stress and crevice on the corrosion of N80 carbon steel in the CO2-saturated NaCl solution containing acetic acid

被引：40

作者：

Li, Y. Z. ^{[1
]}

Guo, X. P. ^{[1
]}

Zhang, G. A. ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Key Lab Mat Chem Storage, Minist Educ, Hubei Key Lab Mat Chem Serv Failure,Sch Chem Chem, Wuhan 430074, Peoples R China

来源：

CORROSION SCIENCE | 2017年 / 123卷

基金：

中国国家自然科学基金;

关键词：

Carbon steel; Crevice corrosion; EIS; SEM; Stress corrosion; FIELD FORMATION WATER; FILM RUPTURE MODEL; CRACKING BEHAVIOR; PIPELINE STEEL; PITTING CORROSION; STAINLESS-STEELS; CO2; CORROSION; X65; STEEL; PIT; EVOLUTION;

D O I：

10.1016/j.corsci.2017.05.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The corrosion behaviour of N80 carbon steel under the coexistence of stress and crevice in the CO2-saturated NaCl solution containing acetic acid (HAc) was studied by electrochemical measurements, surface analysis, and stress analysis. It is demonstrated that the corrosion potential of steel shifts negatively and corrosion activity is enhanced with increasing stress. A deep corrosion groove is formed at crevice mouth, which causes stress concentration, increasing the susceptibility to stress corrosion cracking (SCC). The stress concentration also results in larger driving force for crevice corrosion. Therefore, there is a synergistic effect of stress and crevice on the corrosion of steel.

引用

页码：228 / 242

页数：15

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