Studying filiform corrosion of powder-clearcoated aluminum wheels
Aluminum wheels have become an integral part of automobile styling. It's in a powder coater's best interest to find coating processes that maintain the original luster of clearcoated aluminum wheels.
This article discusses the coating variables that may affect their cosmetic performance, particularly variables in the coating system's resistance to filiform corrosion. It details two experiments that evaluate how the type of powder clearcoat, the thickness of the powder clearcoat, and the method of aluminium pretreatment affect filiform growth. The article also discusses what powder coaters can do to help prevent potential filiform corrosion on the aluminum wheels they coat.