cCl_0 cNa_0+cH_0+2*cFe_0-cOH_0 "Bulk Cl- concentration"
cFe_0 Keq_FeOH2/cOH_0^2 "Bulk Fe2+ concentration"
cH_0 10^(-pKw-pH)[M] "Bulk H+ concentration"
cH_ref 1e-7[M] "Reference concentration of protons for Fe dissolution kinetics"
cNa_0 1[mM] "Bulk Na+ concentration"
cOH_0 10^(-pKw+pH)[M] "Bulk OH- concentration"
D_Cl 2.0e-9[m^2/s] "Diffusion coefficient, Na+"
D_Fe 0.72e-9[m^2/s] "Diffusion coefficient, Fe2+"
D_H 9.3e-9[m^2/s] "Diffusion coefficient, H+"
D_Na 1.3e-9[m^2/s] "Diffusion coefficient, Cl-"
D_OH 5.3e-9[m^2/s] "Diffusion coefficient, OH-"
E_metal -0.31[V] "Metal mixed potential vs SHE"
Eeq_Fe -0.44[V] "Iron dissolution equilibrium potential vs SHE"
epsl_pit 0.025 "Electrolyte volume fraction in pit (porosity)"
H_pit 5[um] "Initial pit height"
i0_ref_Fe 1e0[A/m^2] "Exchange current density at reference conditions"
k_FeOH2 1e4[m^6/mol^2/s] "Rate constant"
Keq_FeOH2 (7.66e-6[M])^3 "Equilibrium constant"
pH 10 "Bulk pH"
pKw 14.94-0.04209*(-273.15+T)/1[K]+1.718E-4*(-273.15+T)^2/1[K^2] "Water dissociation constant"
R_pit 0.5[um] "Initial pit radius"
T 293.15[K] Temperature
rho_Fe 7860[kg/m^3] Density, iron
M_Fe 55.8[g/mol] Molar mass, iron