受硫酸盐还原菌脱硫弧菌影响的微生物对铜的加速腐蚀

IF 1.6 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials and Corrosion-werkstoffe Und Korrosion Pub Date : 2024-07-16 DOI:10.1002/maco.202414451
Lijuan Chen, Jialin Li, Bo Wei, Jin Xu, Cheng Sun
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引用次数: 0

摘要

本研究调查了硫酸盐还原菌(SRB)对铜(Cu)的腐蚀行为和电化学损伤机制。电化学阻抗谱显示,SRB 加速了铜的腐蚀,尽管由于形成了一层致密的生物保护膜而起到了缓解作用。然而,当这层保护膜破裂时,铜的腐蚀趋势明显加剧。表面分析证实了这些发现,主要的腐蚀产物是 Cu2S,热力学计算进一步支持了这一结果。铜的加速腐蚀主要归因于 SRB 的生理代谢,它产生的硫化氢是驱动腐蚀过程的主要物质。
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Accelerated microbiologically influenced corrosion of copper by sulfate-reducing bacterium Desulfovibrio desulfovibrio

The corrosion behavior and electrochemical damage mechanisms induced by sulfate-reducing bacteria (SRB) on copper (Cu) were investigated in this study. Electrochemical impedance spectroscopy revealed that SRB accelerated the corrosion of Cu, albeit with a mitigating effect observed due to the formation of a protective and dense biofilm. However, upon the rupture of this protective film, the corrosion tendency of Cu significantly increased. Surface analysis corroborated these findings, with the predominant corrosion product identified as Cu2S, a result further supported by thermodynamic calculations. The accelerated corrosion of Cu was primarily attributed to the physiological metabolism of SRB, which generates hydrogen sulfide as the principal agent driving corrosion processes.

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来源期刊
Materials and Corrosion-werkstoffe Und Korrosion
Materials and Corrosion-werkstoffe Und Korrosion 工程技术-材料科学:综合
CiteScore
3.70
自引率
11.10%
发文量
199
审稿时长
1.4 months
期刊介绍: Materials and Corrosion is the leading European journal in its field, providing rapid and comprehensive coverage of the subject and specifically highlighting the increasing importance of corrosion research and prevention. Several sections exclusive to Materials and Corrosion bring you closer to the current events in the field of corrosion research and add to the impact this journal can make on your work.
期刊最新文献
Calendar of Events Cover Picture: Materials and Corrosion. 11/2024 Masthead: Materials and Corrosion. 11/2024 Contents: Materials and Corrosion. 11/2024 Calendar of Events
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