Patent ID: 8999514
Filing Date: 2015-04-07
Classification: B22F,B23C,C01P,C22C,C23C,Y10T

Abstract:
1. A method of making a bond coating powder comprising: providing a powder including a plurality of parent particles selected from the group consisting of MCrAlY, wherein M is Ni, Fe, Co, and combinations thereof; providing a plurality of dispersoids; and mechanically alloying the plurality of parent particles and the plurality of dispersoids at ambient temperature, the mechanical alloying being operable to provide a selective occupation by the plurality of dispersoids in a grain boundary area of the plurality of parent particles of the bond coating powder; wherein the plurality of dispersoids occupy about 18 percent to about 30 percent of the grain boundary area; and wherein the plurality of dispersoids selectively occupying the grain boundary area of the plurality of parent particles include a property of reducing a rate of aluminum depletion from the bond coating powder relative to a comparable bond coating lacking the plurality of dispersoids.