Patent ID: 8596387

Claim:
A polycrystalline diamond compact, comprising: a substrate; and a polycrystalline diamond table bonded to the substrate, the polycrystalline diamond table defining a substantially planar upper surface, at least one peripheral surface, and a chamfer extending between the substantially planar upper surface and the at least one peripheral surface, the polycrystalline diamond table including a plurality of bonded diamond grains defining a plurality of interstitial regions, the polycrystalline diamond table further including: a first region adjacent to the substrate that includes metal-solvent catalyst disposed interstitially between the bonded diamond grains thereof; and a leached second region extending inwardly from the substantially planar upper surface and the at least one peripheral surface that is depleted of the metal-solvent catalyst, the leached second region exhibiting a leach depth profile in a non-peripheral region and in a peripheral region, the leach depth profile in the non-peripheral region having a maximum leach depth that is at least about 300 μm as measured from the substantially planar upper surface, a leach depth of the leach depth profile of the non-peripheral region decreasing with lateral distance from a central axis of the polycrystalline diamond table and toward the at least one peripheral surface.