Anodic Dissolution of Iron–Nickel Alloy under Non-Steady-State Conditions

Resumo

Anodic dissolution of iron–nickel electrolytic alloy in the acidic chloride solution is studied by the non-steady-state electrochemical methods. It is shown that, in the initial period, selective dissolution of the alloy with prevailing iron ionization takes place. Then, the anodic dissolution rate is limited by the nonsteady-state bulk diffusion of the components in the solid phase. The effective diffusion coefficients of iron in the alloy are calculated.