Effect of uniaxial elastic stress on corrosion of X80 pipeline steel in an acidic soil solution containing sulfate-reducing bacteria trapped under disbonded coating

被引：40

作者：

Wei, Boxin ^{[1
,2
]}

Xu, Jin ^{[2
]}

Cheng, Y. Frank ^{[3
]}

Sun, Cheng ^{[2
]}

Yu, Changkun ^{[2
]}

Wang, Zhenyao ^{[2
]}

机构：

[1] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China

[2] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China

[3] Univ Calgary, Dept Mech & Mfg Engn, Calgary, AB T2N 1N4, Canada

来源：

CORROSION SCIENCE | 2021年 / 193卷

基金：

中国国家自然科学基金;

关键词：

Stress corrosion; Sulfate-reducing bacteria (SRB); X80 pipeline steel; Elastic stress; Acidic soil; MICROBIOLOGICALLY INFLUENCED CORROSION; CARBON-STEEL; STAINLESS-STEEL; STRAIN-RATE; MILD-STEEL; CRACKING; BEHAVIOR; IRON; LAYER; FAILURE;

D O I：

10.1016/j.corsci.2021.109893

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of elastic stress on corrosion of X80 steel in an acidic soil solution containing sulfate-reducing bacteria (SRB) trapped under a simulated disbonded coating was investigated. The SRB numbers at the coating holiday after 14 days were approximately 106 cells/mL, and they were higher than those in the simulated disbonded coating region. The stressed coupons underwent more severe SRB corrosion and pitting at the same locations under the simulated disbonded coating due to the mechanochemical effect. These results indicated that the pitting process was affected by the applied elastic stress in the X80 steel.

引用

页数：19

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