POLYCRYSTALLINE DIAMOND COMPACTS

摘要

In an embodiment, a polycrystalline diamond compact includes a substrate, and a polycrystalline diamond (“PCD”) table bonded to the substrate and including an exterior working surface, at least one lateral surface, and a chamfer extending between the exterior working surface and the at least one lateral surface. The PCD table includes bonded diamond grains defining interstitial regions. The PCD table includes a first region adjacent to the substrate and a second leached region adjacent to the first region and extending inwardly from the exterior working surface to a selected depth. At least a portion of the interstitial regions of the first region include an infiltrant disposed therein. The interstitial regions of the second leached region are substantially free of metal-solvent catalyst. The second region is defined by the exterior working surface, the lateral surface, the chamfer, and a generally horizontal boundary located below the chamfer.

主权项

1. A polycrystalline diamond compact, comprising:
a substrate; and a polycrystalline diamond table bonded to the substrate and including an exterior working surface, at least one lateral surface, and a chamfer extending between the exterior working surface and the at least one lateral 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, at least a portion of the interstitial regions of the first region including an infiltrant disposed therein; anda second leached region adjacent to the first region and extending inwardly from the exterior working surface to a selected depth, the interstitial regions of the second leached region being substantially free of metal-solvent catalyst, the second region being defined by the exterior working surface, the at least one lateral surface, the chamfer, and a generally horizontal boundary located below the chamfer.