초록 ▼

Small, preferably micronsized hollow glass or ceramic spheres or foaming agents for making such micronsized hollow spaces or voids are incorporated into a resin material which is formed into a layer and after curing of the resin layer, it is abraded, sand or grit blasted so as to rupture the outermo

Small, preferably micronsized hollow glass or ceramic spheres or foaming agents for making such micronsized hollow spaces or voids are incorporated into a resin material which is formed into a layer and after curing of the resin layer, it is abraded, sand or grit blasted so as to rupture the outermost layer of spheres or voids to provide a plurality of undercuts or nooks and crannies. A thermally sprayed metal, such as copper, becomes embedded into the undercuts pores, nooks and crannies, such that the bond or adherent strength is greatly improved. This micronsized glass, ceramic spheres and/or pores greatly increases the bond strength by providing better undercuts in the surface to be sprayed by molten metal and provide the capability of depositing thicker layers without jeopardizing the bond.

대표청구항 ▼

In a method of applying a metal coating to a marine surface of a metal selected from the group comprising copper and copper alloys, the improvement comprising the steps (1) of grit-blasting said marine surface, (2) coating said marine surface with a curable syntactic foam adhesive layer, (3) curing

In a method of applying a metal coating to a marine surface of a metal selected from the group comprising copper and copper alloys, the improvement comprising the steps (1) of grit-blasting said marine surface, (2) coating said marine surface with a curable syntactic foam adhesive layer, (3) curing said curable adhesive layer, (4) abrading said cured syntactic foam adhesive layer to expose any voids in said cured syntactic foam adhesive layer and thereby produce undercuts, nooks and crannies in the surface thereof, and (5) thermally spraying the undercuts, nooks and crannies in said syntactic foam adhesive layer with molten particles of said metal in one or more passes thereof.