Crevice corrosion of X80 carbon steel induced by sulfate reducing bacteria in simulated seawater

被引：34

作者：

Zhang, Tiansui ^{[1
]}

Wang, Junlei ^{[1
]}

Li, Guangfang ^{[1
]}

Liu, Hongfang ^{[1
]}

机构：

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

来源：

BIOELECTROCHEMISTRY | 2021年 / 142卷

关键词：

Carbon steel; Biofilm; SEM; Microbiological corrosion; Crevice corrosion; MICROBIOLOGICALLY INFLUENCED CORROSION; PIPELINE STEEL; STAINLESS-STEELS; BEHAVIOR; ACID; INITIATION; COPPER;

D O I：

10.1016/j.bioelechem.2021.107933

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Crevice corrosion of X80 carbon steel in simulated seawater with the presence of SRB was studied by sur -face analysis and electrochemical measurements. The electrode inside crevice was seriously corroded. Large amount of corrosion products accumulated along the crevice mouth. Galvanic current densities measurements confirmed that there was a galvanic effect between the carbon steel at the crevice interior and exterior during the crevice corrosion. The difference in the sessile SRB cells quantities and SRB bio-films developments inside and outside crevice caused the galvanic effect between the carbon steel inside and outside the crevice, which further induced crevice corrosion. Increased crevice width reduced the galvanic effect, resulting in less crevice corrosion in wider crevice. (c) 2021 Elsevier B.V. All rights reserved.

引用

页数：14

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