Corrosion mechanisms of EH40 steel induced by extracellular polymeric substances from Halomonas titanicae cultivated under aerobic and anaerobic conditions
Mengyu Fu, Muqiu Xia, Li Lai, Shihang Lu, Shiqiang Chen, Guangzhou Liu
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Abstract
This study analyzed six extracellular polymeric substances (EPS) of Halomonas titanicae under aerobic (S-EPS, LB-EPS, TB-EPS) and anaerobic conditions (S-EPS', LB-EPS', TB-EPS'), investigating their corrosion impact on EH40 steel. Results indicate that S-EPS and S-EPS', primarily composed of humic acids and soluble microbial products, demonstrate an initial capacity for corrosion inhibition; however, this efficacy diminishes progressively with time. In contrast, protein-rich B-EPS and B-EPS' interact more strongly with the surface, particularly TB-EPS and TB-EPS', causing significant uneven corrosion. Furthermore, oxygen reduces EPS stability and interaction with steel, with corrosion effects more pronounced in anaerobic environments, especially for LB-EPS' and TB-EPS'.
期刊介绍：
Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies.
This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.
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