Microbiologically influenced corrosion behavior of S32654 super austenitic stainless steel in the presence of marine Pseudomonas aeruginosa biofilm

IMR OpenIR

	Microbiologically influenced corrosion behavior of S32654 super austenitic stainless steel in the presence of marine Pseudomonas aeruginosa biofilm
	Li, Huabing; Yang, Chuntian; Zhou, Enze; Yang, Chunguang; Feng, Hao; Jiang, Zhouhua; Xu, Dake; Gu, Tingyue; Yang, Ke; Yang, CG; Xu, DK (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
	2017-12-01
发表期刊	JOURNAL MATER SCI TECHNOL
ISSN	1005-0302
卷号	33 期号:12 页码:1596-1603
摘要	S32654 super austenitic stainless steel (SASS) is widely used in highly corrosive environments. However, its microbiologically influenced corrosion (MIC) behavior has not been reported yet. In this study, the corrosion behavior of S32654 SASS caused by a corrosive marine bacterium Pseudomonas aeruginosa was investigated using electrochemical measurements and surface analysis techniques. It was found that P. aeruginosa biofilm accelerated the corrosion rate of S325654 SASS, which was demonstrated by a negative shift of the open circuit potential (E-OCP), a decrease of polarization resistance and an increase of corrosion current density in the culture medium. The largest pit depth of the coupons exposed in the P. aeruginosa broth for 14 days was 2.83 mu m, much deeper than that of the control (1.33 mu m) in the abiotic culture medium. It was likely that the P. aeruginosa biofilm catalyzed the formation of CrO3, which was detrimental to the passive film, resulting in MIC pitting corrosion. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.; S32654 super austenitic stainless steel (SASS) is widely used in highly corrosive environments. However, its microbiologically influenced corrosion (MIC) behavior has not been reported yet. In this study, the corrosion behavior of S32654 SASS caused by a corrosive marine bacterium Pseudomonas aeruginosa was investigated using electrochemical measurements and surface analysis techniques. It was found that P. aeruginosa biofilm accelerated the corrosion rate of S325654 SASS, which was demonstrated by a negative shift of the open circuit potential (E-OCP), a decrease of polarization resistance and an increase of corrosion current density in the culture medium. The largest pit depth of the coupons exposed in the P. aeruginosa broth for 14 days was 2.83 mu m, much deeper than that of the control (1.33 mu m) in the abiotic culture medium. It was likely that the P. aeruginosa biofilm catalyzed the formation of CrO3, which was detrimental to the passive film, resulting in MIC pitting corrosion. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
部门归属	[li, huabing ; yang, chuntian ; zhou, enze ; feng, hao ; jiang, zhouhua] northeastern univ, sch met, shenyang 110819, liaoning, peoples r china ; [yang, chunguang ; xu, dake ; yang, ke] chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china ; [gu, tingyue] ohio univ, inst corros & multiphase technol, dept chem & biomol engn, athens, oh 45701 usa
关键词	Microbiologically Influenced Corrosion Super Austenitic Stainless Steel Pseudomonas Aeruginosa Biofilm Pitting Corrosion
学科领域	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助者	High Technology Research and Development Program of China [2015AA034301]; National Natural Science Foundation of China [51304041, U1660118]; Fundamental Research Funds for the Central Universities [N150204007]
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/78941
专题	中国科学院金属研究所
通讯作者	Yang, CG; Xu, DK (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Li, Huabing,Yang, Chuntian,Zhou, Enze,et al. Microbiologically influenced corrosion behavior of S32654 super austenitic stainless steel in the presence of marine Pseudomonas aeruginosa biofilm[J]. JOURNAL MATER SCI TECHNOL,2017,33(12):1596-1603.
APA	Li, Huabing.,Yang, Chuntian.,Zhou, Enze.,Yang, Chunguang.,Feng, Hao.,...&Xu, DK .(2017).Microbiologically influenced corrosion behavior of S32654 super austenitic stainless steel in the presence of marine Pseudomonas aeruginosa biofilm.JOURNAL MATER SCI TECHNOL,33(12),1596-1603.
MLA	Li, Huabing,et al."Microbiologically influenced corrosion behavior of S32654 super austenitic stainless steel in the presence of marine Pseudomonas aeruginosa biofilm".JOURNAL MATER SCI TECHNOL 33.12(2017):1596-1603.