POLYCRYSTALLINE DIAMOND COMPACT, AND RELATED METHODS AND APPLICATIONS

摘要

Embodiments of the invention relate to polycrystalline diamond compacts (“PDCs”) including a polycrystalline diamond (“PCD”) table in which cobalt is alloyed with phosphorous to improve the thermal stability of the PCD table. In an embodiment, a PDC includes a substrate and a PCD table including an upper surface spaced from an interfacial surface that is bonded to the substrate. The PCD table includes a plurality of diamond grains defining a plurality of interstitial regions. The PCD table further includes an alloy comprising at least one Group VIII metal and phosphorous. The alloy is disposed in at least a portion of the plurality of interstitial regions.

主权项

1. A polycrystalline diamond compact, comprising:
a substrate; and a polycrystalline diamond table integrally formed with the substrate, the polycrystalline diamond table including an upper surface spaced from an interfacial surface that is bonded to the substrate, the polycrystalline diamond table including a plurality of diamond grains defining a plurality of interstitial regions, the polycrystalline diamond table further including an alloy comprising at least one intermetallic compound including at least one Group VIII metal and phosphorous in an amount greater than 80 weight % of the alloy, the alloy being disposed in at least a portion of the plurality of interstitial regions.