Patent ID: 8814966
Filing Date: 2014-08-26
Classification: B22F,B24D,C22C,E21B

Abstract:
1. A polycrystalline diamond compact for use in a subterranean drilling apparatus, comprising: a substrate; and a preformed polycrystalline diamond body bonded to the substrate, the preformed polycrystalline diamond body including a plurality of bonded diamond grains exhibiting diamond-to-diamond bonding therebetween, the preformed polycrystalline diamond body including at least one interstitial carbide phase selected from the group consisting of at least one carbide of titanium, vanadium, chromium, manganese, zirconium, niobium, molybdenum, hafnium, tantalum, and rhenium, the preformed polycrystalline diamond body including an exterior upper surface and an interfacial surface bonded to the substrate, the preformed polycrystalline diamond body further including: