Extracellular Electron Transfer in Microbiologically Influenced Corrosion of 201 Stainless Steel by <i>Shewanella algae</i>

Weiwei Chang; Xiaohan Wang; Huaibei Zheng; Tianyu Cui; Hongchang Qian; Yuntian Lou; Jianguo Gao; Shuyuan Zhang; Dawei Guo

doi:10.3390/ma16155209

Materials (Jul 2023)

Extracellular Electron Transfer in Microbiologically Influenced Corrosion of 201 Stainless Steel by <i>Shewanella algae</i>

Weiwei Chang,
Xiaohan Wang,
Huaibei Zheng,
Tianyu Cui,
Hongchang Qian,
Yuntian Lou,
Jianguo Gao,
Shuyuan Zhang,
Dawei Guo

Affiliations

Weiwei Chang: National Materials Corrosion and Protection Data Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
Xiaohan Wang: Shanghai Aerospace Equipments Manufacturer Co., Ltd., Shanghai 200245, China
Huaibei Zheng: State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan 114002, China
Tianyu Cui: National Materials Corrosion and Protection Data Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
Hongchang Qian: National Materials Corrosion and Protection Data Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
Yuntian Lou: National Materials Corrosion and Protection Data Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
Jianguo Gao: National Materials Corrosion and Protection Data Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
Shuyuan Zhang: National Materials Corrosion and Protection Data Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
Dawei Guo: Institute for the Development and Quality Macau, Macau 999078, China

DOI: https://doi.org/10.3390/ma16155209
Journal volume & issue: Vol. 16, no. 15
p. 5209

Abstract

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The microbiologically influenced corrosion of 201 stainless steel by Shewanella algae was investigated via modulating the concentration of fumarate (electron acceptor) in the medium and constructing mutant strains induced by ΔOmcA. The ICP-MS and electrochemical tests showed that the presence of S. algae enhanced the degradation of the passive film; the lack of an electron acceptor further aggravated the effect and mainly affected the early stage of MIC. The electrochemical tests and atomic force microscopy characterization revealed that the ability of ΔOmcA to transfer electrons to the passive film was significantly reduced in the absence of the c-type cytochrome OmcA related to EET progress, leading to the lower corrosion rate of the steel.

Published in Materials

ISSN: 1996-1944 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering; Technology: Engineering (General). Civil engineering (General); Science: Natural history (General): Microscopy; Science: Physics: Descriptive and experimental mechanics
Website: http://www.mdpi.com/journal/materials/

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