Numerical simulation of a single corrosion pit in CO2 and acetic acid environments

被引：41
作者：
Amri, J. [1 ,2 ]
Gulbrandsen, E. [2 ]
Nogueira, R. P. [1 ]
机构：
[1] Inst Natl Polytech Grenoble, CNRS, UJF, SIMAP & LEPMI,UMR5266 & 5631, F-38402 St Martin Dheres, France
[2] Inst Energy Technol, N-2027 Kjeller, Norway
来源：
CORROSION SCIENCE | 2010年 / 52卷 / 05期
关键词：
Steel; Modelling study; Pitting corrosion; Acid corrosion; CRITICAL PITTING TEMPERATURE; CREVICE CORROSION; STAINLESS-STEELS; TRANSPORT PROCESSES; PASSIVITY BREAKDOWN; MATHEMATICAL-MODEL; FULL HYDROLYSIS; CARBON-STEEL; MILD-STEEL; IONS;
D O I：
10.1016/j.corsci.2010.01.010
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The present paper bears on a numerical model of steady-state behaviour of a single corrosion pit in CO2 containing media in the presence of acetic acid. The kinetics of electrochemical reactions occurring on the electrode surface is described by Tafel equations fitted to experimental data obtained on API 5L X65 pipeline steel. Simulation results provide an interesting insight into both the chemistry and electrochemistry inside the active pit. Particular attention is paid to the effect of HAc on the coupling behaviour between the attack base and the outer surrounding surface and to the comparison with experimental data obtained in similar conditions. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1728 / 1737
页数：10
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