Table 1 Physical values and parameters used in the study.
From: Phase-field modeling for pH-dependent general and pitting corrosion of iron
Symbol | Value |
|---|---|
Interfacial energy, γ [J/m2] | 0.5 |
Transfer coefficient of the Butler–Volmer kinetics, α | 0.5 |
Diffusion coefficient of Fe2+ ion in the electrolyte27, \({D}_{{{\rm{Fe}}}^{2+}}^{{\rm{s}}}\) [m2/s] | 1.52 × 10−9 |
Diffusion coefficient of H+ ion the electrolyte27, \({D}_{{{\rm{H}}}^{+}}^{{\rm{s}}}\) [m2/s] | 15.0 × 10−9 |
Diffusion coefficient of OH− ion the electrolyte27, \({D}_{{{\rm{OH}}}^{-}}^{{\rm{s}}}\) [m2/s] | 9.0 × 10−9 |
Diffusion coefficient of Cl− ion the electrolyte27, \({D}_{{{\rm{Cl}}}^{-}}^{{\rm{s}}}\) [m2/s] | 4.0 × 10−9 |
Diffusion coefficient of all ion in iron electrode, De [m2/s] | 0 |
Equilibrium constant for Bockris kinetics (Eq. (3)), K1 | 1.0 |
Equilibrium constant for Bockris kinetics (Eq. (5)), K3 | 1.0 |
Conductivity of the electrolyte20, σs [S/m] | 1.0 |
Equilibrium potential27, Eeq [mV] | − 540 |
