Patent ID: 7419704

Claim:
A process of applying a coating on a fiber reinforced composite material comprising the steps of: a) applying a first polymeric layer to a fiber reinforced polymer substrate, the first polymeric layer being free of fibers and particulate; b) applying a second polymeric layer coating to the first polymeric layer to join the fiber reinforced polymer substrate to the second polymeric layer using the first polymeric layer as a bonding agent, the second polymeric layer comprising a polymeric matrix and a particulate within the polymeric matrix, wherein the second polymeric layer contains about 20 to 85 weight percent particulate and wherein the particulate in the second polymeric layer is a metal; and c) thermal spraying a material to coat the second polymeric layer to form an adherent multi-layer coating attached to the fiber reinforced polymer substrate, the multi-layer coating being attached to the fiber reinforced polymer substrate with a tensile strength of at least about 10 MPa.