Electrochemical behavior of API X70 steel in hydrogen sulfide-containing solutions

被引：35
|
作者：
Arzola, S.
Mendoza-Flores, J.
Duran-Romero, R.
Genesca, J.
机构：
[1] Univ Nacl Autonoma Mexico, Fac Quim, Dept Ingn Met, Mexico City 04510, DF, Mexico
[2] Inst Mexicano Petr, Direcc Ejecut Explorac & Prod, Mexico City 07730, DF, Mexico
来源：
CORROSION | 2006年 / 62卷 / 05期
关键词：
electrochemical impedance spectroscopy; flow; hydrogen sulfide; X70; steel;
D O I：
10.5006/1.3278280
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
As an attempt to contribute to the understanding of the corrosion process of steel by hydrogen sulfide (H2S), the corrosion behavior of an X70 pipeline steel immersed in several H2S-containing solutions is analyzed in this work. Linear polarization resistance (LPR) and electrochemical impedance spectroscopy (EIS) techniques were used in order to characterize the corrosion behavior of X70 steel in H2S-containing solutions. Electrochemical parameters such as charge-transfer resistance, R-ct, polarization resistance, R-p, and corrosion rate are presented in this work. Additionally, a comparison between static and turbulent flow conditions was made in order to describe the corrosion behavior of X70 steel. Turbulent flow conditions were controlled using the rotating cylinder electrode (RCE) (at 1,000 rpm) in a saturated H2S solution.
引用
收藏
页码：433 / 443
页数：11
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