Abstract
The general and galvanic corrosion of carbon steel (SS400) and stainless steel (SUS304) in CO 2 + NaCl aqueous solution at elevated temperatures has been analyzed using electrochemical measurements and computational simulation. The potential and current density distributions on the galvanic elements are described by the Laplace equation, and for numerical calculation the boundary element method has been used. The experimentally determined polarization curves have been used in order to define the nonlinear boundary conditions. This boundary value problem has been solved using the Newton-Raphson iterative numerical procedure. Additional thermodynamic and kinetic analysis was conducted to explain the observed corrosion behaviour.
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