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A Kinetic Model for CO2 Corrosion of Steel in Confined Aqueous Environments

Abstract : A kinetic model of the physicochemical processes occurring during the corrosion of steel covered by a thin water film exposed to a Formula atmosphere is proposed. This model explains theoretically the unusual physicochemical behaviors generally observed in such confined corrosive media: Formula 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.
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E. Remita, B. Tribollet, E. Sutter, F. Ropital, X. Longaygue, et al.. A Kinetic Model for CO2 Corrosion of Steel in Confined Aqueous Environments. Journal of The Electrochemical Society, Electrochemical Society, 2008, 155 (1), pp.C41. ⟨10.1149/1.2801349⟩. ⟨hal-02420605⟩



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