Chromium Carbide 75Cr3C2-25NiCr Thermal Spray Powder

GP25NC series products are spheroidal, agglomerated powders for thermal spray. The GP25NC series materials are sintered prior to densification. These materials consist of 75 % chromium carbide as a hard, wear-resistant phase that has a minimal tendency for decomposition during the thermal spray process. A nickel chromium matrix functions as a binder for the carbides and is responsible for the excellent corrosion and oxidation resistance exhibited by coatings of these materials. Densification of the powders produces higher apparent densities compared to powders of similar chemistry, which leads to denser coatings with improved corrosion resistance.

Coatings of these materials are known as some of the best materials for use in applications with combined wear and corrosion. They protect against abrasion, fretting, various forms of erosion and tribological corrosion at elevated temperatures up to 850 °C (1560 °F). They are well known as materials for thermal sprayed alternatives to hard chromium plating with better corrosion resistance in chloride, acidic and alkaline environments. HCl environments should be avoided.

HVOF coatings of these materials are dense, show good bond strength and are more homogeneous than coatings applied using atmospheric plasma spray or combustion powder.