US 12,296,400 B2
Additively depositing multiple braze materials
Charles Trent Daulton, Burkburnett, TX (US); and Kevin M. Tracy, Wichita Falls, TX (US)
Assigned to Pratt & Whitney Canada Corp., Longueuil (CA)
Filed by Pratt & Whitney Canada Corp., Longueuil (CA)
Filed on Sep. 9, 2022, as Appl. No. 17/942,072.
Prior Publication US 2024/0082938 A1, Mar. 14, 2024
Int. Cl. B22F 10/20 (2021.01); B23K 1/00 (2006.01); B23K 1/008 (2006.01); B23P 6/00 (2006.01); B33Y 10/00 (2015.01)
CPC B23K 1/0018 (2013.01) [B22F 10/20 (2021.01); B23K 1/008 (2013.01); B23P 6/007 (2013.01); B33Y 10/00 (2014.12)] 18 Claims
OG exemplary drawing
 
1. A method, comprising:
depositing first braze powder with a substrate, the first braze powder comprising a metal alloy powder and a first braze material powder with a lower melting point than the metal alloy powder, the first braze material powder comprising a melting point suppressant to facilitate melting and diffusion of the first braze powder with the substrate, the first braze powder sintered to the substrate during the depositing of the first braze powder to provide the substrate with sintered first braze material;
depositing second braze powder with the substrate, the second braze powder different than the first braze powder and the second braze powder sintered to the substrate during the depositing of the second braze powder to provide the substrate with sintered second braze material; and
heating the sintered first braze material and the sintered second braze material to melt the sintered first braze material and the sintered second braze material and to diffusion bond the sintered first braze material and the sintered second braze material to the substrate;
wherein the second braze powder comprises second metal alloy powder and second braze material powder, the second braze material powder comprising the melting point suppressant to facilitate melting and diffusion of the second braze powder with the substrate.