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CORROSION BEHAVIOR OF Q235 STEEL UNDER THE INTERACTION OF ALTERNATING CURRENT AND MICROORGANISMS
Qing Yongchang1; Yang Zhiwei2; Xian Jun2; Xu Jin1; Yan Maocheng1; Wu Tangqing3; Yu Changkun1; Yu Libao1; Sun Cheng1
Corresponding AuthorSun Cheng(chengsun@imr.ac.cn)
2016-09-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume52Issue:9Pages:1142-1152
AbstractWith 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.
KeywordAC corrosion sulfate reducing bacteria (SRB) electrochemistry microbiologically influenced corrosion (MIC) rectification effect
Funding OrganizationNational Natural Science Foundation of China ; National RD Infrastructure and Facility Development Program of China
DOI10.11900/0412.1961.2016.00030
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000383635700014
PublisherSCIENCE PRESS
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/122698
Collection中国科学院金属研究所
Corresponding AuthorSun Cheng
Affiliation1.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
Recommended Citation
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.
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