CORROSION BEHAVIOR OF Q235 STEEL UNDER THE INTERACTION OF ALTERNATING CURRENT AND MICROORGANISMS

doi:10.11900/0412.1961.2016.00030

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	CORROSION BEHAVIOR OF Q235 STEEL UNDER THE INTERACTION OF ALTERNATING CURRENT AND MICROORGANISMS
	Qing Yongchang 1; Yang Zhiwei 2; Xian Jun 2; Xu Jin 1; Yan Maocheng 1; Wu Tangqing 3; Yu Changkun 1; Yu Libao 1; Sun Cheng 1
刊名	ACTA METALLURGICA SINICA
	2016-09-11
卷号	52 期号:9 页码:1142-1152
关键词	AC corrosion sulfate reducing bacteria (SRB) electrochemistry microbiologically influenced corrosion (MIC) rectification effect
ISSN号	0412-1961
DOI	10.11900/0412.1961.2016.00030
通讯作者	Sun Cheng(chengsun@imr.ac.cn)
英文摘要	With the rapid development of electricity and transport industry, more and more buried pipelines are parallel or cross to the high voltage transmission line and the electrified railway. In this work, microbiological analysis method was used to investigate the effect of alternating current (AC) on the physiology of sulfate reducing bacteria (SRB). Electrochemical methods, including open circuit potential, potentiondynamic polarization curves and electrochemical impedance spectroscopy (EIS) on Q235 steel samples, were performed in soil leaching solution to study the electrochemical behavior with the presence or absence of AC and SRB. The corrosion morphology was observed by scanning electron microscopy (SEM). The results indicate that the AC which current density is 50 A/m(2) and frequency is 50 Hz has only a small impact on the growth of SRB, but its alternating electric field can reduce the adsorption and promote the desorption of the biofilm. During the initial experiment, the active biofilm can inhibit the corrosion of Q235 steel due to the electronegativity and the physical barrier, but the microbial metabolites would promote the corrosion during the later experiment without active biofilm. AC can improve the corrosion rate and lead the corrosion products loose because of the rectifying effect, the alternating electric field and the self catalytic effect of pitting corrosion.
资助项目	National Natural Science Foundation of China[51471176] ; National Natural Science Foundation of China[51131001] ; National RD Infrastructure and Facility Development Program of China[2005-DKA10400]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000383635700014
资助机构	National Natural Science Foundation of China ; National RD Infrastructure and Facility Development Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/122697]
专题	金属研究所_中国科学院金属研究所
通讯作者	Sun Cheng
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Oil Gas Storage & Transportat Co, Xinjiang Oilfield Branch, Karamay 834002, Peoples R China 3.Xiangtan Univ, Key Lab Mat Design & Preparat Technol Hunan Prov, Xiangtan 411105, Peoples R China
推荐引用方式 GB/T 7714	Qing Yongchang,Yang Zhiwei,Xian Jun,et al. CORROSION BEHAVIOR OF Q235 STEEL UNDER THE INTERACTION OF ALTERNATING CURRENT AND MICROORGANISMS[J]. ACTA METALLURGICA SINICA,2016,52(9):1142-1152.
APA	Qing Yongchang.,Yang Zhiwei.,Xian Jun.,Xu Jin.,Yan Maocheng.,...&Sun Cheng.(2016).CORROSION BEHAVIOR OF Q235 STEEL UNDER THE INTERACTION OF ALTERNATING CURRENT AND MICROORGANISMS.ACTA METALLURGICA SINICA,52(9),1142-1152.
MLA	Qing Yongchang,et al."CORROSION BEHAVIOR OF Q235 STEEL UNDER THE INTERACTION OF ALTERNATING CURRENT AND MICROORGANISMS".ACTA METALLURGICA SINICA 52.9(2016):1142-1152.