BI-LAYER IRON COATING OF LIGHTWEIGHT METALLIC SUBSTRATE
A wear resistant friction coating (WRFC) can be applied on a lightweight metallic substrate, by applying a cold gas dynamic spray bond coat containing more iron than any other single element directly onto a surface of the substrate, and thermal spraying the WRFC coating over the bond coat to a thickness of at least 500 μm. Corrosion resistance, adhesion, thermal cycling resistance, and wear resistance have been demonstrated.