EIS study of the surface film on the surface of carbon steel from supercritical carbon dioxide corrosion

被引：73
作者：
Wu, SL
Cui, ZD
Zhao, GX
Yan, ML
Zhu, SL
Yang, XJ [1 ]
机构：
[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China
[2] China Natl Petr Corp, Tubular Goods Res Ctr, Xian 710065, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2004年 / 228卷 / 1-4期
关键词：
EIS; surface film; characteristics; carbon dioxide corrosion;
D O I：
10.1016/j.apsusc.2003.12.025
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The electrochemical impedance spectroscopy (EIS) technique was Used to investigate the characteristics of the Surface film on the surface of carbon steel formed in static Simulated produced water saturated with supercritical carbon dioxide (SC-CO2). Electrical equivalent Circuits were proposed to describe the electrochemical behavior. The results showed that a protective surface film was observed on the surface of the pre-filmed samples. In general, the protective performance of the surface film was enhanced with the increase of the exposure time within the time period of 0-6 h. The surface film formed at a high temperature was more protective than that formed at a low temperature because the fast formation of the film at elevated temperatures and the surface film became more compact and continuous with the increase of the temperature. Results Of EIS were in good agreement with the weight-loss measurements. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：17 / 25
页数：9
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