埋地钢质管道交流干扰腐蚀影响因素实验分析  

Experiment Analysis of Influence Factors of Corrosion Induced by Alternating Current Interference for Buried Steel Pipelines

作　　者：李源[1] 张礼敬[1] 陶刚[1] 杜春泉[1] 

机构地区：[1]南京工业大学城市建设与安全工程学院,江苏南京210009

出　　处：《全面腐蚀控制》2011年第11期38-41,24,共5页Total Corrosion Control

基　　金：国家863计划资助项目(2007AA06A402);江苏省普通高校研究生科研创新计划资助项目(CXLX11_0385)

摘　　要：参照埋地管道服役环境,搭建钢质管道交流干扰腐蚀实验平台。采用腐蚀试片失重法,测试钢质管道在土壤模拟溶液中的腐蚀速率,研究交流杂散电流干扰环境下杂散电流大小、土壤电导率以及土壤酸碱度对钢质管道腐蚀速率的影响。实验结果表明:杂散电流对钢质管道的腐蚀速率影响最大,土壤酸碱度和土壤电导率对钢质管道的腐蚀速率影响规律复杂。According to the service environment of buried pipelines, an experimental platform for alternating current （AC） interference corrosion was set up. The corrosion depth of buried steel pipeline in simulated soil solution was analyzed by the method of corrosion weight loss. Influences of stray current, soil electrical conductivity and soil pH on corrosion depth were also investigated through experiment study. The results showed that AC stray current was the main factors that affected corrosion rate. Steel pipeline＇s corrosion rate had complicated relation with soil pH and soil electrical conductivity.

关 键 词：钢质管道 交流干扰 土壤模拟溶液 杂散电流 腐蚀速率 

分 类 号：TG172.84[金属学及工艺—金属表面处理]