腐蚀
生物膜
阴极保护
极化(电化学)
硫酸盐还原菌
电化学
细菌
氧化剂
铁细菌
生物污染
化学
微生物
海水
材料科学
冶金
硫酸盐
生物化学
电极
有机化学
生物
物理化学
生态学
遗传学
膜
作者
Jian Wang,Meiying Lv,Min Du,Zhenxin Li,Ting Xu,Guannan Li
标识
DOI:10.1016/j.corsci.2022.110670
摘要
The laws of cathodic polarization on bacterial growth, biofilm formation and effects on the corrosion process of X65 steel were investigated when sulfate-reducing bacteria (SRB) and iron-oxidizing bacteria (IOB) are mixed using surface analysis and electrochemical measurements. Results indicate that insufficient potentials could not inhibit the localized corrosion, but increased the metabolic activities of bacteria. Effective protection could be achieved when the potential was negatively shifted to − 1050 mV vs. SCE. The effects of cathodic polarization on the precess of biofilms formation were also investigated. The − 1050 mV vs. SCE polarization potential could inhibit the biological activity of sessile bacteria, destroy the biofilm structure and inhibit the corrosion process induced by each biofilm.
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