Patent ID: 8323367

Claim:
A polycrystalline diamond compact, comprising: a substrate; and a pre-sintered polycrystalline diamond body bonded to the substrate, the pre-sintered polycrystalline diamond body including an upper surface, an interfacial surface located at least proximate to the substrate, and a plurality of bonded diamond grains defining a plurality of interstitial regions, the pre-sintered polycrystalline diamond body further including: a first region extending inwardly from the interfacial surface and including an infiltrant disposed in the interstitial regions thereof, wherein the infiltrant includes at least one member selected from the group consisting of iron, nickel, cobalt, and an iron-nickel-based braze alloy; and a second region from which the infiltrant has been at least partially removed to a selected depth, the second region extending inwardly from the upper surface.