flow-accelerated corrosion

Flow-accelerated corrosion (FAC), also known as flow-assisted corrosion, is a corrosion mechanism in which a normally protective oxide layer on a metal surface dissolves in a fast flowing water.

The mechanism of erosion corrosion, the materials affected by it, and the conditions when it occurs are generally different than that of flow-accelerated corrosion, although the last one is sometimes classified as a sub-type of erosion corrosion.