CO_2环境中P110钢阳极溶解过程EIS特征  

EIS Characteristics of Anodic Dissolution for P110 Steel under CO_2 Environment

作　　者：李静[1] 孙冬柏[1] 俞宏英[1] 李辉勤[1] 孟惠民[1] 杨德钧[1] 路民旭[2] 严密林[2] 赵国仙[2] 

机构地区：[1]北京科技大学材料科学与工程学院腐蚀与防护中心,北京100083 [2]中国石油天然气集团公司西安石油管材研究所,陕西西安710065

出　　处：《电化学》2001年第1期120-125,共6页Journal of Electrochemistry

摘　　要：研究了P110油管钢在CO2 饱和的模拟油田采出液中 ,阳极极化下的EIS谱随温度的变化规律 .结果表明 :在低于 90℃的范围内 ,存在一个谱图转变临界温度 ,临界温度之下为三个时间常数型谱图 ,临界温度之上为两个时间常数型谱图 .从阳极反应机理和CO2 腐蚀特征出发对试验结果进行了解释 .Effect of temperature on the electrochemical impedance spectroscopy for P110 steel at anodic polarized potential was investigated in simulated CO 2 saturated oil produced water. The results demonstrated that in the range from room temperature to 90 ℃, there was a critical temperature , below which a three time constant impedance spectrum was observed and above which a two time constant spectrum was shown. A reasonable explanation was given to this phenomenon in an effort to elucidate the mechanism of anodic dissolution and characteristics of CO 2 corrosion.

关 键 词：电化学阻抗 P110钢 阳极极化 二氧化碳腐蚀 成膜机理 

分 类 号：TG171[金属学及工艺—金属表面处理]