Under-Deposit Corrosion

Application ID: 67821

In this model, the effect of corrosion product on galvanic corrosion between a magnesium alloy (AE44) and mild steel in contact with brine solution is presented, wherein deformed boundaries due to both deposition of corrosion product as well as dissolution of magnesium are considered.

The transport of Mg2+ ions generated at the magnesium surface and OH- ions generated at the mild steel surface and their precipitation reaction forming magnesium hydroxide corrosion product are modeled here using Transport of Diluted Species interface. The tracking of magnesium hydroxide corrosion product (Mg(OH)2) is modeled using the Level Set interface under Mathematics branch.

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