POLYCRYSTALLINE DIAMOND COMPACT AND METHOD OF MAKING A POLYCRYSTALLINE DIAMOND COMPACT

摘要

The invention relates to polycrystalline diamond compacts ("PDCs") including a polycrystalline diamond ("PCD") table (114) in which cobalt, iron or nickel is alloyed with phosphorous to improve the thermal stability of the PCD table. The PDC includes a substrate (107) and a PCD table(114) including an upper surface (112) spaced from an interfacial surface (103/106) that is bonded to the substrate (107). The PCD table includes a plurality of diamond grains defining a plurality of interstitial regions. TThe alloy is disposed in at least a portion of the plurality of interstitial regions. The alloy contains at least 80 weight% of an intermetallic compound of Co/Ni/Fe and P.