Patent ID: 8689913

Claim:
A polycrystalline diamond compact, comprising: a substrate including an interfacial surface having a domed raised region defining a convex surface, the domed raised region comprises a substantial portion of the interfacial surface; and a polycrystalline diamond table bonded to the interfacial surface of the substrate, the polycrystalline diamond table defining an upper surface and exhibiting a thickness over the domed raised region of about 1900 μm or less, 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 exhibiting a maximum leach depth and extending inwardly from the upper surface, the interstitial regions of the leached second region depleted of the metal-solvent catalyst; wherein a ratio of the thickness of the polycrystalline diamond table to the maximum leach depth of the leached second region is about 1.25 to about 8.0.