Study on microbiologically influenced corrosion of HSLA-65 steel

被引：0

作者：

Khan, M. Saleem ^{[1
]}

Shi, Xianbo ^{[4
]}

Yuan, Shengfu ^{[1
]}

Guo, Fujian ^{[1
,5
]}

Li, Wenxin ^{[1
]}

Lin, Siwei ^{[1
]}

Yang, Ke ^{[4
]}

Wang, Xuelin ^{[1
,2
]}

Shang, Chengjia ^{[1
,6
]}

Zhao, Ying ^{[3
]}

机构：

[1] Yangjiang Adv Alloys Lab, Yangjiang Branch, Guangdong Lab Mat Sci & Technol, Yangjiang 529500, Peoples R China

[2] Univ Sci & Technol Beijing, Collaborat Innovat Ctr Steel Technol, Beijing 100083, Peoples R China

[3] Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen 518000, Peoples R China

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

[5] Guangdong Ocean Univ, Sch Mat Sci & Engn, Yangjiang 529500, Peoples R China

[6] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2024年 / 32卷

关键词：

HSLA-65; steel; Pseudomonas aeruginosa; Marine environment; Microbiologically influenced corrosion; SULFATE-REDUCING BACTERIA; DUPLEX STAINLESS-STEEL; CARBON-STEEL; PITTING CORROSION; ELECTRON-TRANSFER; PSEUDOMONAS; BEHAVIOR; RESISTANCE; STRENGTH; BIOFILMS;

D O I：

10.1016/j.jmrt.2024.08.064

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the current study, the corrosion behavior of HSLA-65 steel was investigated in a simulated marine environment inoculated with P. aeruginosa. In the electrochemical measurements, the negative shift in OCP, lower values of corrosion potential, pitting potential, and increased corrosion current density of the HSLA-65 steel in the biotic medium signified its low corrosion resistance in the presence of P. aeruginosa. The observation of the surface morphology revealed biofilm formation on the steel surface in the P. aeruginosa-inoculated culture medium, which significantly accelerated the pitting corrosion of the steel. The pit observed on the steel surface in the biotic medium was about 3.9 times deeper than in the sterile medium. In addition, the weight loss of the steel in the biotic medium was about 2.4 times higher compared to that in the sterile medium. These findings suggest that the P. aeruginosa biofilm significantly accelerated the corrosion of HSLA-65 steel in the simulated marine environment.

引用

页码：2244 / 2254

页数：11

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