碳添加型导电涂层在陕北土壤模拟溶液中的腐蚀行为研究  

Corrosion Behavior of A Carbon Filled Conducting Organic Coating in A Simulated Solution in Soil at Shanbei Area

作　　者：王森[1] 胡亚博[2,3] 李志忠[1] 高书君[2,3] 吉宏亮[4] 董超芳[2,3] 李晓刚[2,3] 

机构地区：[1]陕西电力科学研究院 国家电网公司电网接地工程技术实验室,西安710054 [2]北京科技大学腐蚀与防护中心,北京100083 [3]北京科技大学新材料技术研究院,北京100083 [4]陕西电力科学研究院国家电网公司电网接地工程技术实验室,西安710054

出　　处：《腐蚀科学与防护技术》2013年第6期489-494,共6页Corrosion Science and Protection Technology

基　　金：国家电网公司2009年度科技项目资助

摘　　要：采用浸泡实验、电化学阻抗谱测试、扫描电镜等分析方法,研究了碳添加型导电涂层接地材料在陕北土壤模拟溶液中的腐蚀行为。结果表明,涂层内部碳网之间的间隙会成为腐蚀介质和氧的扩散通道;随着浸泡时间的延长,涂层的阻抗明显降低;涂层吸水达到饱和,碳和基体的电偶效应会加速基体的腐蚀,腐蚀产物主要是基体Zn的氧化物。The corrosion behavior of a carbon filled conducting organic coating for grounding Zn was investigated in a simulated solution of the soil of Shanbei area by means of EIS, SEM and open circuit potential measurement. The results showed that in the simulation solution, water and oxygen can migrate through the porous or defects in carbons net. The EIS data showed that the re- sistance of the coating decreased with the increasing immersion time. When water and oxygen reach the substrate surface, corrosion of Zn was enhanced as the anode part of the Zn/C galvanic corrosion system. The corrosion product was mainly composed of oxide of zinc.

关 键 词：碳添加型导电涂层 接地材料 陕北土壤 腐蚀 

分 类 号：TU56[建筑科学—建筑技术科学]