Microbial corrosion of CoCrMnNi high entropy alloy by Pseudomonas aeruginosa through electron transfer between Mn and microbe

Weiwei Chang; Zhizhong Tian; Shufei Jiang; Min Zhou; Dawei Guo; Jianguo Gao; Shengyu He; Chi Tat Kwok; Lap Mou Tam; Hongchang Qian; Dawei Zhang

Journal of Materials Research and Technology (Mar 2024)

Microbial corrosion of CoCrMnNi high entropy alloy by Pseudomonas aeruginosa through electron transfer between Mn and microbe

Weiwei Chang,
Zhizhong Tian,
Shufei Jiang,
Min Zhou,
Dawei Guo,
Jianguo Gao,
Shengyu He,
Chi Tat Kwok,
Lap Mou Tam,
Hongchang Qian,
Dawei Zhang

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; BRI Southeast Asia Network for Corrosion and Protection (MOE), Shunde Graduate School of University of Science and Technology Beijing, Foshan, 528399, China
Zhizhong Tian: National Materials Corrosion and Protection Data Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China
Shufei Jiang: Aerospace Engineering Equipment (Suzhou) Co., Ltd., Suzhou, 215104, China
Min Zhou: Department of Electromechanical Engineering, University of Macau, Macau, 999078, China
Dawei Guo: Department of Electromechanical Engineering, University of Macau, Macau, 999078, China; Institute for the Development and Quality Macau, Macau, 999078, 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; BRI Southeast Asia Network for Corrosion and Protection (MOE), Shunde Graduate School of University of Science and Technology Beijing, Foshan, 528399, China
Shengyu He: National Materials Corrosion and Protection Data Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China; BRI Southeast Asia Network for Corrosion and Protection (MOE), Shunde Graduate School of University of Science and Technology Beijing, Foshan, 528399, China
Chi Tat Kwok: Department of Electromechanical Engineering, University of Macau, Macau, 999078, China
Lap Mou Tam: Department of Electromechanical Engineering, University of Macau, Macau, 999078, China; Institute for the Development and Quality Macau, Macau, 999078, 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; BRI Southeast Asia Network for Corrosion and Protection (MOE), Shunde Graduate School of University of Science and Technology Beijing, Foshan, 528399, China; Corresponding author. National Materials Corrosion and Protection Data Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China.
Dawei Zhang: National Materials Corrosion and Protection Data Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China; BRI Southeast Asia Network for Corrosion and Protection (MOE), Shunde Graduate School of University of Science and Technology Beijing, Foshan, 528399, China; Corresponding author. National Materials Corrosion and Protection Data Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China.

Journal volume & issue: Vol. 29
pp. 386 – 399

Abstract

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The microbiologically influenced corrosion of CoCrMnNi high entropy alloy induced by P. aeruginosa was investigated in this work. The results of electrochemical tests, time-of-flight secondary ion mass spectrometry and X-ray photoelectron spectroscopy showed that the thickness of passive film was significantly decreased in the presence of P. aeruginosa and the corrosion of HEA was accelerated. When the organic nutrients were deficient, the extracellular electron transfer process was promoted and the corrosion resistance of the HEA was further decreased according to the results of potentiodynamic polarization and Mott-Schottky. The effect of nutrients deficiency on MIC acceleration was more prominent after the degradation of the passive film. Mn metal in the HEA substrate preferentially participated in the bacterial metabolism as an alternative energy source due to the high activity.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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