HIGH HARDNESS FLAME SPRAY NICKEL-BASE ALLOY COATING MATERIAL

摘要

Abstract of the DisclosureA metal spray powder blend is provided character-ized by the property of forming a dense coating on a metalsubstrate comprising a self-fluxing nickel-base alloy powderhaving intimately associated with the surface thereof byblending an aluminum powder ranging in amount from about 0.5to 5% by weight, the average size ratio of the nickel-basealloy powder to the aluminum powder being over 5:1, thealuminum powder having an average particle size of less thanabout 15 microns. A preferred method of spraying the powderis to gravity feed it into the flame of a metal sprayingtorch.