取安徽省八座500kV变电站土壤按水土比1：1配制试验介质，对铜质接地网材料进行电化学测试和极化曲线测试，结果表明，铜质接地网材料在试验介质中的腐蚀均属于活化控制，没有明显的氧扩散控制；电化学阻抗谱测试结果表明，铜质接地网材料在试验介质中浸泡4h，反应只受电极溶解控制。
Electrochemical tests of copper grounding grid material were carried out in eight 500 kV substations in Anhui province, using the electrolyte of water ： soil=1 ： 1. The polarization curves indicated that the corrosion rate of copper grounding grid material was mainly affected by the rate of electron diffusion, not by oxygen diffusion. The electrochemical impedance spectroscopy of copper material showed that, after immersion in the electrolyte of water soil= 1 ： 1 for 4 hours, the corrosion rate of copper grounding grid material was only affected by the dissolution rate of the working electrode.
参考文献
| [1] | 张利庭,张元龙,李汝彪,魏状.变电站接地网腐蚀行为的实验室快速测定[J].浙江化工,2010(07):23-26. |
| [2] | 龚晓明,葛红花,刘蕊,吴一平.碳钢和纯铜在试验土壤中的腐蚀研究[J].上海电力学院学报,2009(06):552-556. |
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