Patent ID: 8727044

Claim:
A polycrystalline diamond compact, comprising: a substrate; and a pre-sintered polycrystalline diamond table bonded to the substrate, the pre-sintered polycrystalline diamond table including bonded diamond grains defining a plurality of interstitial regions, the pre-sintered polycrystalline diamond table further including: an upper surface; a back surface bonded to the substrate; at least one lateral surface extending between the upper surface and the back surface; a first region extending inwardly from the upper surface and the at least one lateral surface, the first region including at least a residual amount of at least one interstitial constituent disposed in at least a portion of the interstitial regions thereof, the at least one interstitial constituent including at least one metal carbonate and/or at least one metal oxide, wherein the at least one metal oxide includes one or more alkali metal oxides, one or more alkaline earth metal oxides, or combinations thereof; and a second bonding region adjacent to the substrate and extending inwardly from the back surface to a depth of about 50 μm to about 1000 μm, the second bonding region including a metallic infiltrant and a residual amount of the at least one interstitial constituent disposed in at least a portion of the interstitial regions thereof.