碳钢在上海土壤中的腐蚀行为研究

邵玉佩; 张兵; 穆苗苗; 金雨; 廖强强

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DOI:10.3969/j.issn.1006-4729.2016.06.013

Journal of ShangHai University of Electric Power :2016,32(6):565-569

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碳钢在上海土壤中的腐蚀行为研究

邵玉佩¹, 张兵², 穆苗苗¹, 金雨¹, 廖强强¹

(1.上海电力学院环境与化学工程学院;2.陕西电力科学研究院国家电网公司接地工程技术实验室)

Study on Corrosion Behaviors of Carbon Steel in Shanghai Soil

SHAO Yupei¹, ZHANG Bing², MU Miaomiao¹, JIN Yu¹, LIAO Qiangqiang¹

(1.School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China;2.Lab of Grounding Engineering and Technology of State Grid, Shaanxi Electric Power Research Institute, Xi'an 710054, China)

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Received:September 30, 2015

中文摘要: 采用电化学阻抗技术、极化曲线、光学显微镜、能谱仪和X射线衍射等技术，对接地极碳钢材料在上海土壤中的腐蚀电化学行为进行了研究.结果表明：在上海土壤环境中，碳钢的阻抗值随浸泡时间的延长出现先升高再平稳后上升的趋势，腐蚀电流密度降低；碳钢表面形成的腐蚀产物膜，以及阴极氧扩散过程控制的共同作用降低了腐蚀速率；碳钢腐蚀主要以全面腐蚀为主，还伴有微生物腐蚀现象，腐蚀产物膜主要由Fe₂O₃组成；接地极碳钢材料在上海土壤环境中的耐腐蚀性能为良.

中文关键词: 碳钢上海土壤接地网腐蚀行为

Abstract:The corrosion behaviors of carbon steel for grounding grids in Shanghai soil is analyzed using electrochemical impedance spectroscopy (EIS),polarization curve measurement,energy dispersive spectrometer,optical microscopy and X-ray diffraction.The results show that with the bury duration,the resistance of carbon steel increases and then tends to be stable after rising in Shanghai soil,the corrosion current density decreases,the corrosion rate decreases,which may be due to a combination of the corrosion products forming on the surface of carbon steel and the oxygen diffusion control.Corrosion of carbon steel is mainly of general corrosion,accompanied by microbial corrosion phenomena,corrosion products forming consisting mainly of Fe₂O₃.According to the corrosion resistance evaluation criteria,the corrosion resistance of carbon steel for grounding grids in Shanghai soil is fine.

keywords: carbon steel Shanghai soil grounding grid corrosion behavior

文章编号：201600613 中图分类号： 文献标志码：

基金项目:上海市科学技术委员会项目（14DZ1201500）；国家电网公司科技项目（5226SX13044J）.

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Author Name	Affiliation	E-mail
SHAO Yupei	School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China	shypyx@126.com
ZHANG Bing	Lab of Grounding Engineering and Technology of State Grid, Shaanxi Electric Power Research Institute, Xi'an 710054, China
MU Miaomiao	School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
JIN Yu	School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
LIAO Qiangqiang	School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China