Electrochemical behavior of steel A36 under disbonded coating in the presence of sulfate-reducing bacteria

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	Electrochemical behavior of steel A36 under disbonded coating in the presence of sulfate-reducing bacteria
	J. Xu; C. Sun; M. C. Yan; F. H. Wang
	2013
发表期刊	Materials Chemistry and Physics
ISSN	0254-0584
卷号	142 期号:2-3 页码:692-700
摘要	Variation and distribution of the environmental parameters (potential, current, pH and [C1(-)]) and electrochemical behavior of steel A36 were studied in a crevice under a disbanded coating in soil extract solutions in the presence and absence of sulfate-reducing bacteria (SRB). Results show that the crevice blocks the penetration of cathodic currents, and weakens the cathodic polarization of the steel in the crevice. The presence of SRB in the crevice leads to alkalization of the solution and increases energy consumption of the cathodic protection system. The forming of the reversed potential increases the cathodic current. SRB restrains corrosion of the steel in the earlier period due to the protective biofilms, whereas it SRB corrosion of the steel in the later period because of exfoliation of the films and the formation of the corrosive microcell. (C) 2013 Elsevier B.V. All rights reserved.
部门归属	[xu, jin ; sun, cheng ; yan, maocheng ; wang, fuhui] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; xu, j (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; xujin@imr.ac.cn
关键词	Corrosion Metals Surfaces Corrosion Test Electron Microscopy Cathodic Protection Carbon-steel Pipeline Coatings Crevice Corrosion Biofilm Polarization Environment Underneath
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71604
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Xu,C. Sun,M. C. Yan,et al. Electrochemical behavior of steel A36 under disbonded coating in the presence of sulfate-reducing bacteria[J]. Materials Chemistry and Physics,2013,142(2-3):692-700.
APA	J. Xu,C. Sun,M. C. Yan,&F. H. Wang.(2013).Electrochemical behavior of steel A36 under disbonded coating in the presence of sulfate-reducing bacteria.Materials Chemistry and Physics,142(2-3),692-700.
MLA	J. Xu,et al."Electrochemical behavior of steel A36 under disbonded coating in the presence of sulfate-reducing bacteria".Materials Chemistry and Physics 142.2-3(2013):692-700.