酸性土壤浸出液中X80钢微生物腐蚀研究：(II) 腐蚀形貌和产物分析

doi:10.11902/1005.4537.2014.045

中国腐蚀与防护学报

2014, Vol. 34

Issue (4): 353-358 DOI: 10.11902/1005.4537.2014.045

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酸性土壤浸出液中X80钢微生物腐蚀研究：(II) 腐蚀形貌和产物分析

吴堂清¹, 杨圃², 张明德³, 许进¹, 闫茂成¹, 于长坤¹, 孙成¹

1. 中国科学院金属研究所金属腐蚀与防护国家重点实验室沈阳 110016; 2. 新疆油田油气储运分公司克拉玛依 834002; 3. 中国石油集团西部钻探工程有限公司乌鲁木齐 830011

Microbiologically Induced Corrosion of X80 Pipeline Steel in an Acid Soil Solution: (II) Corrosion Morphology and Corrosion Product Analysis

WU Tangqing¹, YANG Pu², ZHANG Mingde³, XU Jin¹, YAN Maocheng¹, YU Changkun¹, SUN Cheng¹

1. State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; 2. Oil-Gas Storage and Transportation Company, Xinjiang Oilfield Branch, Karamay 834002, China; 3. Xibu Drilling Engineering Co. Ltd., China National Petroleum Corporation, Urumqi 830011, China

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摘要: 利用X射线光电子能谱分析 (XPS) 和扫描电子显微镜 (SEM) 研究了X80管线钢在一种酸性土壤浸出液中硫酸盐还原菌 (SRB) 腐蚀的产物成分和形貌。结果表明,SRB没有改变样品表面腐蚀产物膜的结构,但其生理过程促进了S从氧化态向还原态的转变,并促进了S在腐蚀产物中的沉积；同时代谢产物磷化物也沉积在腐蚀产物中,改变了腐蚀产物的成分。SRB提高了管线钢局部腐蚀的敏感性,使得腐蚀形式从非均匀腐蚀向局部腐蚀转变。SRB代谢产物和细菌/金属间的直接电子转移可能是促进局部腐蚀萌生的主要原因。

关键词 ：硫酸盐还原菌, 管线钢, 酸性土壤浸出液, 腐蚀形貌

Abstract：In most cases, microbiologically induced corrosion (MIC) of pipeline was investigated in near neutral culture-media, however, the particular and new environments in which pipeline services were ignored. In this paper, morphology and composition of corrosion productsinduced by sulphate-reducing bacteria (SRB) in an acid soil solution of X80 pipeline steel were examined by X-ray photoelectron spectroscopy (XPS) and scanning electron microscope (SEM). The results showed that the activities of SRB have little influence on the structure of the corrosion product on the steel surface, while it facilitates the transformation of sulfur from oxidation states into redox status and thereby, the deposition of sulfide and phosphuret, altering the composition of the corrosion product. In the presence of SRB, the sensitivity to local corrosion of the steel is increased notably, and the metabolite of SRB and the direct electron transfer (DET) from the steel to SRB may be responsible for the increase.

Key words： sulphate-reducing bacteria pipeline steel acid soil solution corrosion morphology

收稿日期: 2014-04-10

ZTFLH:

TG172.4

基金资助:国家自然科学基金项目(50971128和51131001)及国家科技基础条件平台建设项目(2005DKA10400CT-2-02)资助

通讯作者: 通讯作者：孙成,E-mail：chengsun@imr.ac.cn E-mail: chengsun@imr.ac.cn

作者简介: 吴堂清，男，1987年生，博士生，研究方向为微生物作用下管线钢环境致裂行为

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吴堂清, 杨圃, 张明德, 许进, 闫茂成, 于长坤, 孙成. 酸性土壤浸出液中X80钢微生物腐蚀研究：(II) 腐蚀形貌和产物分析[J]. 中国腐蚀与防护学报, 2014, 34(4): 353-358.
WU Tangqing, YANG Pu, ZHANG Mingde, XU Jin, YAN Maocheng, YU Changkun, SUN Cheng. Microbiologically Induced Corrosion of X80 Pipeline Steel in an Acid Soil Solution: (II) Corrosion Morphology and Corrosion Product Analysis. Journal of Chinese Society for Corrosion and protection, 2014, 34(4): 353-358.

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https://www.jcscp.org/CN/10.11902/1005.4537.2014.045 或 https://www.jcscp.org/CN/Y2014/V34/I4/353

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