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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
Source PublicationMaterials Chemistry and Physics
ISSN0254-0584
Volume142Issue:2-3Pages:692-700
AbstractVariation 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.
description.department[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
KeywordCorrosion Metals Surfaces Corrosion Test Electron Microscopy Cathodic Protection Carbon-steel Pipeline Coatings Crevice Corrosion Biofilm Polarization Environment Underneath
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71604
Collection中国科学院金属研究所
Recommended Citation
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.
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