Models for Corrosion of Metals under Thin Electrolyte Layers

One-dimensional mathematical models are presented for the free corrosion of a metal surface under a thin electrolyte layer with or without an oxide layer. The models address anodic metal dissolution which is controlled by oxygen diffusion through the electrolyte layer and by the oxygen reduction at the metal surface. Under free corrosion the effect of a porous oxide layer under the thin electrolyte film which is either inert or supports the oxygen reduction on its surface is discussed.