Atmospheric Corrosion of a Busbar

Application ID: 47801

This model simulates atmospheric galvanic corrosion of a busbar, which includes a copper flange, an aluminum alloy flange in contact with a zinc nut and bolt. The Secondary Current Distribution interface is used to solve for the electric potential in electrode domain and Current Distribution, Shell interface is used to solve for the electrolyte potential in the thin electrolyte layer.

The electrolyte film thickness and conductivity depend on the relative humidity of the surrounding air. The limiting oxygen reduction current density depends on the oxygen diffusivity and solubility in this model.

This model example illustrates applications of this type that would nominally be built using the following products: