Microbiologically Influenced Corrosion Mechanism of Ferrous Alloys in Marine Environment

Autor: M. Saleem Khan, Tao Liang, Yuzhi Liu, Yunzhu Shi, Huanhuan Zhang, Hongyu Li, Shifeng Guo, Haobo Pan, Ke Yang, Ying Zhao
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Metals, Vol 12, Iss 9, p 1458 (2022)
Druh dokumentu: article
ISSN: 2075-4701
DOI: 10.3390/met12091458
Popis: In marine environments, microbial attacks on metallic materials result in microbiologically influenced corrosion (MIC), which could cause severe safety accidents and high economic losses. To date, MIC of a number of metallic materials ranging from common steels to corrosion-resistant ferrous alloys has been reported. The MIC process has been explained based on (1) bio-catalyzed oxygen reduction; (2) kinetics alternation of the corrosion process by increasing the mass transport of the reactants and products; (3) production of corrosive substances; and (4) generation of auxiliary cathodic reactants. However, it is difficult to have a clear understanding of the MIC mechanism of ferrous alloys due to the interdisciplinary nature of MIC and lack of deep knowledge about the interfacial reaction between the biofilm and ferrous alloys. In order to better understand the effect of the MIC process on ferrous alloys, here we comprehensively summarized the process of biofilm formation and MIC mechanisms of ferrous alloys.
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