盐碱环境中变电站接地体材料的腐蚀行为研究  

Research on Corrosion Characteristics of Substation Grounding Materials in Salinity Environment

作　　者：杨明[1] 程好 

机构地区：[1]江苏省电力设计院,江苏南京211102 [2]连云港供电公司,江苏连云港222100

出　　处：《江苏电机工程》2013年第6期69-71,84,共4页Jiangsu Electrical Engineering

摘　　要：文中通过实验室埋片腐蚀失重试验、自腐蚀电位和腐蚀速率的测试,研究了3种变电站地网材料(镀锌钢、铜、导电防腐涂料)在沿海盐碱土壤(原状土和回填土)中的腐蚀行为和规律。研究结果表明,在盐碱土壤中镀锌层呈现高的腐蚀活性,对钢不具有保护作用,纳米碳导电防腐涂料对钢也没有明显的保护效果,而铜在回填土中的腐蚀速率约仅有镀锌钢的1%。研究成果为变电站接地材料的选择提供了技术支撑。Through the tests of corrosion weight loss, corrosion potential and corrosion rate under laboratory environment, the corrosion characters and laws of three kinds of substation grounding material （Galvanized carbon steel, Copper and Conductive anti-corrosion coatings） in coastal saline soils （undisturbed soil and back-filing soil） are studied in this paper. The result indicates that the Zinc coating is with a high corrosion speed and cannot protect steel in saline soils. Also the conductive anti-corrosion coating is without significant protective effect. But the corrosion rate of Copper in the backfill is only about 1% of galvanized steel.The research results provide a specific basis to choose substation grounding materials.

关 键 词：接地材料 盐碱土 腐蚀速率 

分 类 号：TG179[金属学及工艺—金属表面处理]