A kinetic model for CO2 corrosion of steel in confined aqueous environments

被引：22
|
作者：
Remita, E. [1 ]
Tribollet, B.
Sutter, E.
Ropital, F.
Longaygue, X.
Kittel, J.
Taravel-Condat, C.
Desamais, N.
机构：
[1] IFP Energies Nouvelles, F-92852 Rueil Malmaison, France
[2] CNRS, Lab Interfaces Syst Electrochim, UPR 15, F-75252 Paris, France
[3] Lab Gen Procedes Plasma Traitement Surface, F-75005 Paris, France
[4] Technip, F-76580 Le Trait, France
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2008年 / 155卷 / 01期
关键词：
D O I：
10.1149/1.2801349
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A kinetic model of the physicochemical processes occurring during the corrosion of steel covered by a thin water film exposed to a CO2 atmosphere is proposed. This model explains theoretically the unusual physicochemical behaviors generally observed in such confined corrosive media: Fe(II) supersaturations, low corrosion rates, high pH values, and their respective dependence on the electrolyte film thickness. More quantitatively, the model predictions agree well with pH and corrosion rate measurements performed in environments similar to the annulus space of flexible pipelines. (c) 2007 The Electrochemical Society.
引用
收藏
页码：C41 / C45
页数：5
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