Patent ID: 8236074
Filing Date: 2012-08-07
Classification: B22F,B24D,C22C,E21B

Abstract:
1. A superabrasive compact, comprising: a substrate; a preformed polycrystalline diamond table; and a braze material bonding the substrate to the preformed polycrystalline diamond table, wherein at least a majority of the braze material comprises an iron-nickel-based alloy, wherein the braze material is depleted from a selected region of the preformed polycrystalline diamond table; wherein the preformed polycrystalline diamond table is brazed to the substrate with the braze material according to a process comprising: wherein the preformed polycrystalline diamond table exhibits a compressive residual stress field characteristic of the preformed polycrystalline diamond table being brazed to the substrate with the braze material in the high-pressure/high-temperature brazing process.