碳钢在上海土壤中的腐蚀行为研究  

Study on Corrosion Behaviors of Carbon Steel in Shanghai Soil

作　　者：邵玉佩[1] 张兵[2] 穆苗苗[1] 金雨[1] 廖强强[1] SHAO Yupei ZHANG Bing MU Miaomiao JIN Yu LIAO Qiangqiang(School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China Lab of Grounding Engineering and Technology of State Grid, Shaanxi Electric Power Research Institute, Xi＇an 710054, China)

机构地区：[1]上海电力学院环境与化学工程学院,上海200090 [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,陕西西安710054

出　　处：《上海电力学院学报》2016年第6期565-569,共5页Journal of Shanghai University of Electric Power

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

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.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 Fe203. According to the corrosion resistance evaluation criteria, the corrosion resistance of carbon steel for grounding grids in Shanghai soil is fine.

关 键 词：碳钢 上海土壤 接地网 腐蚀行为 

分 类 号：TG172.4[金属学及工艺—金属表面处理]