Time-dependent numerical model for localised Zinc corrosion

We developed a time-dependent numerical model for localized Zinc corrosion. The model includes mass transport of ionic species inside the liquid film on the metal surface, oxygen reduction and metal oxidation reactions and the formation of corrosion products at the metal-liquid interface. The resulting set of differential equations is discretised using the FEM and solved by the Newton method. Potential and concentrations maps are calculated in time. The simulations can resolve features that are much smaller than the available measuring techniques are able to.