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 polycrystalline diamond compact, comprising:
a cemented carbide substrate; and a preformed polycrystalline diamond table attached to the substrate, the preformed polycrystalline diamond table including:
a plurality of bonded diamond grains defining a plurality of interstitial regions;a first region adjacent to the substrate having a cobalt-boron-silicon alloy infiltrant disposed in at least a portion of the interstitial regions of the first region; anda second region extending inwardly from an exterior surface that is substantially free of the cobalt-boron-silicon alloy infiltrant.