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电化学(中英文) ›› 2001, Vol. 7 ›› Issue (1): 120-125. 

• 研究论文 • 上一篇    下一篇

CO_2环境中P110钢阳极溶解过程EIS特征

李静,孙冬柏,俞宏英,李辉勤,孟惠民,杨德钧,路民旭,严密林,赵国仙   

  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,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,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,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,北京科技大学材料科学与工程学院
  • 收稿日期:2001-02-28 修回日期:2001-02-28 出版日期:2001-02-28 发布日期:2001-02-28

EIS Characteristics of Anodic Dissolution for P110 Steel under CO_2 Environment

LI Jing , SUN Dong bai,YU Hong ying, MENG Hui min, LI Hui qin, YANG De jun   

  1. (Corrosion and Protection Center, School of Material Science and Engineering, University of Science and Technology Beijing 10083) LU Min?xu, YAN Mi lin, ZHAO Guo xi
  • Received:2001-02-28 Revised:2001-02-28 Published:2001-02-28 Online:2001-02-28

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 .

关键词: CO_2腐蚀, 电化学阻抗, P110钢, 阳极极化

Abstract: 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.

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