The effect of pre-corrosion and steel microstructure on inhibitor performance in CO2 corrosion

被引：126
作者：
Paolinelli, L. D. [1 ]
Perez, T. [2 ]
Simison, S. N. [1 ]
机构：
[1] UNMdP, Div Corros INTEMA, Mar Del Plata, Buenos Aires, Argentina
[2] Ctr Invest Ind CINI, RA-2804 Campana, Argentina
来源：
CORROSION SCIENCE | 2008年 / 50卷 / 09期
关键词：
Carbon steel; EIS; CO2; corrosion; Steel microstructure; Imidazolines;
D O I：
10.1016/j.corsci.2008.06.031
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The importance of chemical composition and microstructure on CO2 corrosion of carbon and low alloy steels has been widely recognized, still contradictory results can be found in the literature. The aim of this work is to assess the relationship between microstructure, surface condition and inhibitor efficiency in CO2 corrosion. A C-Mn steel with two different microstructures was tested in a deoxygenated 5% wt. NaCl solution saturated with CO2 at 40 degrees C, pH 6. A commercial imidazoline-based inhibitor was added after different pre-corrosion periods. The results obtained showed that pre-corrosion decreases the inhibitor efficiency, but that its impact is microstructure dependent. (c) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2456 / 2464
页数：9
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