POLYCRYSTALLINE DIAMOND COMPACTS, RELATED PRODUCTS, AND METHODS OF MANUFACTURE

摘要

Embodiments relate to polycrystalline diamond compacts (“PDCs”) and methods of manufacturing such PDCs in which an at least partially leached polycrystalline diamond (“PCD”) table is infiltrated with a low viscosity cobalt-based alloy infiltrant.

主权项

1. A method of fabricating a polycrystalline diamond compact, comprising:
forming a polycrystalline diamond table in the presence of a metal-solvent catalyst in a first high-pressure/high-temperature process, the polycrystalline diamond table including a plurality of bonded diamond grains defining a plurality of interstitial regions, at least a portion of the plurality of interstitial regions including the metal-solvent catalyst disposed therein; at least partially leaching the polycrystalline diamond table to remove at least a portion of the metal-solvent catalyst therefrom to form an at least partially leached polycrystalline diamond table; and subjecting the at least partially leached polycrystalline diamond table and a substrate to a second high-pressure/high-temperature process under diamond-stable temperature-pressure conditions effective to at least partially infiltrate the at least partially leached polycrystalline diamond table with an alloy infiltrant comprising a cobalt-boron-silicon alloy infiltrant.