Patent ID: 8383203
Filing Date: 2013-02-26
Classification: B05D,C22C,C23C,Y10T

Abstract:
1. A method of imparting high-temperature, degradation resistance to a combustion engine component associated with an internal combustion engine comprising: applying a metal slurry comprising a Co-based alloy composition, a binder, and a solvent to a surface of the internal combustion engine component having a body of a material selected from the group consisting of carbon steel, stainless steel, and alloy steel, wherein the metal slurry comprises Co-based powdered alloy particles comprising between about 0.05 and about 0.5 wt % B, between about 5 and about 20 wt % Cr, between about 22 and 32 wt % Mo, between 1 and about 4 wt % Si, and balance Co, and wherein the internal combustion engine component has a sharp projection, cavity, and/or through hole; and sintering the Co-based metallic composition to form a substantially continuous Co-based alloy coating between about 100 and about 1000 microns thick on the surface of the combustion engine component, wherein the Co-based alloy coating has a microstructure characterized by generally non-dendritic, irregularly spherical, nodular intermetallic Laves phase nodules, and wherein the coating imparts resistance to wear against mating components; wherein said sintering is performed at a temperature in the range of 2200° F. to 2300° F.