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Influence of Sulfate-Reducing Bacteria on the Corrosion Behavior of High Strength Steel EQ70 under Cathodic Polarization
Guan, Fang1,2; Zhai, Xiaofan1; Duan, Jizhou1; Zhang, Meixia1,2; Hou, Baorong1
2016-09-07
发表期刊PLOS ONE
卷号11期号:9
文章类型Article
摘要Certain species of sulfate- reducing bacteria (SRB) use cathodes as electron donors for metabolism, and this electron transfer process may influence the proper protection potential choice for structures. The interaction between SRB and polarized electrodes had been the focus of numerous investigations. In this paper, the impact of cathodic protection (CP) on Desulfovibrio caledoniens metabolic activity and its influence on highs trength steel EQ70 were studied by bacterial analyses and electrochemical measurements. The results showed that EQ70 under -0.85 V-SCE CP had a higher corrosion rate than that without CP, while EQ70 with -1.05 V-SCE had a lower corrosion rate. The enhanced SRB metabolic activity at -0.85 V-SCE was most probably caused by the direct electron transfer from the electrode polarized at -0.85 V-SCE. This direct electron transfer pathway was unavailable in -1.05 V-SCE. In addition, the application of cathodic protection led to the transformation of sulfide rusts into carbonates rusts. These observations have been employed to provide updated recommendations for the optimum CP potential for steel structures in the presence of SRB.
DOI10.1371/journal.pone.0162315
收录类别SCI
语种英语
WOS记录号WOS:000383255200057
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/135889
专题海洋腐蚀与防护研究发展中心
作者单位1.Chinese Acad Sci, Inst Oceanol, Marine Corros & Protect Ctr, 7 Nanhai Rd, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Guan, Fang,Zhai, Xiaofan,Duan, Jizhou,et al. Influence of Sulfate-Reducing Bacteria on the Corrosion Behavior of High Strength Steel EQ70 under Cathodic Polarization[J]. PLOS ONE,2016,11(9).
APA Guan, Fang,Zhai, Xiaofan,Duan, Jizhou,Zhang, Meixia,&Hou, Baorong.(2016).Influence of Sulfate-Reducing Bacteria on the Corrosion Behavior of High Strength Steel EQ70 under Cathodic Polarization.PLOS ONE,11(9).
MLA Guan, Fang,et al."Influence of Sulfate-Reducing Bacteria on the Corrosion Behavior of High Strength Steel EQ70 under Cathodic Polarization".PLOS ONE 11.9(2016).
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