THE SINGLE EFFECT OF MICROBE ON THE CORROSION BEHAVIORS OF 25 STEEL IN SEAWATER

doi:10.3724/SP.J.1037.2009.00597

IMR OpenIR

	THE SINGLE EFFECT OF MICROBE ON THE CORROSION BEHAVIORS OF 25 STEEL IN SEAWATER
	Wu Jinyi 1; Chai Ke 1; Xiao Weilong 1; Yang Yuhui 2; Han Enhou 3
通讯作者	Wu Jinyi(wujinyi1976@yahoo.com.cn)
	2010-06-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	46 期号:6 页码:755-760
摘要	Biological elements have a significant impact on lifetime prediction of marine carbon steel facilities. Microbe can produce pitting, crevice corrosion, selective dealloying and stress-oriented hydrogen-induced cracking, which accelerate both localized and average corrosion rates of carbon steel. The formation of microbe films can also reduce the corrosion rate of 25 steel through inhibition of oxygen diffusion and depletion of oxygen in the electrolyte and metal/solution interface. The research on the single effect of microbe on the corrosion behaviors of metal is insufficient up to now. In this work, the single effect of microbe on the corrosion behaviors of 25 steel was studied by comparing the corrosion behaviors of the carbon steel in natural seawater and in sterile seawater. The results show that in most of immerging periods, the bacterial activity at the interface accelerated the average corrosion rate of 25 steel. When the corrosion time was 365 d, the average corrosion rate of 25 steel immersed in natural seawater was 2.6 times that in sterile seawater. However, when the corrosion time was 28 d, the biofilms inhibited the corrosion of 25 steel. The species and contents of microbes significantly influenced the corrosion behavior of 25 steel. The microbes in the corrosion product mainly consisted of pseudomonas, vibrio, crenothrixandleptothrix, thiobacillus and sulfate-reducing bacteria. When the corrosion time was 365 d, flavobacterium also existed in the corrosion product. The contents of aerobe, facultative anaerobe and anaerobe reached the maximum value when the corrosion time was 28, 91 and 184 d, respectively. The regular change of the contents of microbes with the immerging time led to the different microbe corrosion mechanisms of 25 steel.
关键词	25 steel seawater microbe corrosion
资助者	National Natural Science Foundation of China ; Natural Science Foundation of Hainan Province ; Hainan University
DOI	10.3724/SP.J.1037.2009.00597
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[50761004] ; Natural Science Foundation of Hainan Province[807011] ; Natural Science Foundation of Hainan Province[80630] ; Hainan University[Kyjj0536] ; Hainan University[hd09xm77]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000280030800017
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/101112
专题	中国科学院金属研究所
通讯作者	Wu Jinyi
作者单位	1.Hainan Univ, Key Lab, Minist Educ Applicat Technol Chem Mat Hainan Supe, Mat & Chem Engn Coll, Haikou 570228, Peoples R China 2.Hainan Univ, Coll Agr, Haikou 570228, Peoples R China 3.Chinese Acad Sci, State Key Lab Corros & Protect Met, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wu Jinyi,Chai Ke,Xiao Weilong,et al. THE SINGLE EFFECT OF MICROBE ON THE CORROSION BEHAVIORS OF 25 STEEL IN SEAWATER[J]. ACTA METALLURGICA SINICA,2010,46(6):755-760.
APA	Wu Jinyi,Chai Ke,Xiao Weilong,Yang Yuhui,&Han Enhou.(2010).THE SINGLE EFFECT OF MICROBE ON THE CORROSION BEHAVIORS OF 25 STEEL IN SEAWATER.ACTA METALLURGICA SINICA,46(6),755-760.
MLA	Wu Jinyi,et al."THE SINGLE EFFECT OF MICROBE ON THE CORROSION BEHAVIORS OF 25 STEEL IN SEAWATER".ACTA METALLURGICA SINICA 46.6(2010):755-760.