COMPOSITE POWDER FOR DIFFUSION-BRAZING ASSEMBLY OR RESURFACING OF SUPERALLOY PARTS

摘要

The invention relates to a composite metal powder for diffusion-brazing assembly or resurfacing of parts (1, 2) made of superalloy, the powder being formed by mixing a powder (3) of an Astroloy type base metal with a powder (4) of an NiCrB1055 type diffusion-brazing metal. The composite powder is free of silicon and it comprises in the range 65% to 70% by weight of Astroloy and in the range 30% to 35% by weight of NiCrB1055.