X80钢在河南伊川境内土壤模拟溶液中的阴极保护电位  

Cathodic Protection Potential of X80 Steel in Simulated Soil Solution of Yichuan in Henan Province

作　　者：程远 CHENG Yuan(Nation Center for Materials Service Safety,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学国家材料服役安全科学中心,北京100083

出　　处：《腐蚀与防护》2022年第2期39-42,共4页Corrosion & Protection

摘　　要：利用电化学阻抗谱和阴极极化曲线两种方法,研究了X80钢在“西气东输二线”沿线河南伊川土壤模拟溶液中的阴极保护电位,并对两种结果进行了对比。结果表明:这两种方法均可以确定阴极保护极限电位,且具有较好的一致性。通过拟合电荷传递电阻与电位关系曲线,得到X80钢的阴极保护极限保护电位为-1007~-753 mV;通过阴极极化曲线拟合,得到X80钢的阴极保护极限保护电位为-1006~-753 mV。Using the two methods of electrochemical impedance spectroscopy and cathodic polarization curve,the cathodic protection potential of X80 steel in the soil simulation solution of Yichuan,Henan along the“West-East Gas Pipeline”was studied,and the two results were compared.The results showed that these two methods could determine the cathodic protection limit potential,and the results were in good agreement.By fitting the curve of charge transfer resistance vs potential,the cathodic protection limit potential of X80 steel was-1007~-753 mV;by fitting the cathodic polarization curve,the cathodic protection limit potential of X80 steel was-1006~-753 mV.

关 键 词：X80钢 电化学 阴极极化 阴极保护电位 

分 类 号：TE88[石油与天然气工程—油气储运工程]