US 11,865,622 B2
Oxidation and wear resistant brazed coating
Surinder Singh Pabla, Greer, SC (US); Srikanth C. Kottilingam, Greenville, SC (US); David Vincent Bucci, Simpsonville, SC (US); and Biju Dasan, Bangalore (IN)
Assigned to General Electric Company, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Aug. 30, 2021, as Appl. No. 17/461,246.
Prior Publication US 2023/0068810 A1, Mar. 2, 2023
Int. Cl. B22F 7/08 (2006.01); B23K 1/00 (2006.01)
CPC B22F 7/08 (2013.01) [B23K 1/0018 (2013.01); B22F 2301/05 (2013.01); B22F 2302/253 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method, comprising:
applying a material coating to a surface of a machine component, wherein the material coating is formed from a combination of a hardfacing material, aluminum-containing particles, and a braze material;
pre-heating the material coating to precipitate a plurality of intermetallic phases based on the aluminum-containing particles, the hardfacing material, and the braze material; and
after pre-heating the material coating, thermally treating the material coating at an oxidizing temperature to oxidize aluminum in the aluminum-containing particles to generate an oxide layer comprising the aluminum in the aluminum-containing particles, wherein the oxide layer is configured to reduce oxidation of the hardfacing material, and the braze material is configured to facilitate binding between the material coating and the surface of the machine component, and wherein the aluminum-containing particles consist essentially of aluminum metal, an aluminum alloy, an aluminum intermetallic species, or a combination thereof.