Patent ID: 6368727
Filing Date: 2002-04-09
Classification: C23C,Y02T,Y10S,Y10T

Abstract:
A bond coat comprising:a layer possessing an uneven, undulated, and irregular surface, the layer formed of a metal powder mixture disposed on a substrate by a thermal spraying process, wherein the metal powder mixture comprises a first powder having a first particle size and a first melting point and a second powder, the second powder having a second particle size that is less than first particle size and a second melting point that is at least 400Â° C. higher than the first melting point, wherein a portion of the second powder is disposed on the uneven, undulated, and irregular surface to enhance roughness of the bond coat, and wherein the second powder comprises at least one of Ni-20Cr and a MCrAlY alloy, where M is one of iron, nickel, and cobalt, and a density of the bond coat is at least about 95% its theoretical density.