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主管单位 中华人民共和国
工业和信息化部
主办单位 中国材料研究学会
哈尔滨工业大学
主编 苑世剑 国际刊号ISSN 1005-0299 国内刊号CN 23-1345/TB

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引用本文:刘欣,李志美,裴锋,田旭,贾蕗路,崔素梅,毛荣军,万军彪,李财芳,孟墙国,朱嘉伟.红壤土浸出液中SO42-对铜包钢耐蚀性能的影响研究[J].材料科学与工艺,2018,26(6):75-81.DOI:10.11951/j.issn.1005-0299.20180045.
LIU Xin,LI Zhimei,PEI Feng,TIAN Xu,JIA Lulu,CUI Sumei,MAO Rongjun,WAN Junbiao,LI Caifang,MENG Qiangguo,ZHU Jiawei.Effects of SO42- on the corrosion behavior of copper-clad steel in the red soil solution[J].Materials Science and Technology,2018,26(6):75-81.DOI:10.11951/j.issn.1005-0299.20180045.
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红壤土浸出液中SO42-对铜包钢耐蚀性能的影响研究
刘欣1,李志美2,裴锋1,田旭1,贾蕗路1,崔素梅3,毛荣军1,万军彪1,李财芳1,孟墙国2,朱嘉伟2
(1.国网江西省电力有限公司电力科学研究院,南昌 330096;2.南昌大学 化学学院,南昌 330031; 3.江西问天科技有限责任公司,南昌 330096)
摘要:
本文采用扫描电镜/能谱分析(SEM-EDS)、动电位极化、电化学阻抗谱技术研究了铜包钢接地材料受SO42-浓度影响的腐蚀行为.研究结果表明在含有不同浓度的SO42-的红壤土浸出液浸泡20 d,铜包钢都已出现点蚀现象.随着SO42-浓度从0.05~0.2 mol/L逐渐增加,铜包钢腐蚀程度呈现先增后减弱的趋势,在0.05 mol/L的SO42-浸出液中浸泡20天腐蚀最为严重,已腐蚀至内层钢.由于0.05 mol/L的SO42-浸出液中腐蚀后的铜包钢表面已被较多的不导电的腐蚀产物覆盖,因此实验结果显示其阻抗值最大和腐蚀速率最慢.
关键词:  铜包钢  红壤土浸出液  硫酸根离子  腐蚀  电化学技术
DOI:10.11951/j.issn.1005-0299.20180045
分类号:TB324;TQ33
文献标识码:A
基金项目:国家电网公司科技项目(52182017000Y).
Effects of SO42- on the corrosion behavior of copper-clad steel in the red soil solution
LIU Xin1,LI Zhimei2,PEI Feng1,TIAN Xu1,JIA Lulu1,CUI Sumei3,MAO Rongjun1,WAN Junbiao1,LI Caifang1,MENG Qiangguo2,ZHU Jiawei2
(1.State Grid Jiangxi Electric Power Research Institute, Nanchang 330096, China; 2. Department of Chemistry, Nanchang University, Nanchang 330031, China; 3.Jiangxi ASKY Technology Co. Ltd., Nanchang 330096, China)
Abstract:
The investigation is about the corrosion behavior of copper-clad steel suffered from different concentrations of SO42- using SEM-EDS, polarization curves, and electrochemical impedance spectroscopy technique. The results shows that the materials of copper-clad steel immersed in the red soil solutions containing different concentrations of SO42- in 20 days were destroyed from pitting corrosion. With the increase of SO42- concentration from 0.05 to 0.2 mol/L, the corrosion degree showeda tendency of increasing gradually at low concentration and decreasing at high concentration of SO42-. The copper-clad steel corrosion was the severest. When immersed in the red soil solution of with SO42- concentration of 0.05 mol/L for 20 days. The destruction was into inner steel. As the copper-clad steel immersed in the red soil solution of with SO42- concentration of 0.05 mol/L for 20 days was covered by more insulated corrosion products than others, its impedance of copper-clad steel was the most eminent, and its corrosion rate was also the lowest.
Key words:  copper-clad steel  red soil solution  SO42-  corrosion  electrochemical technique

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