CARBONATE-CATALYZED POLYCRYSTALLINE DIAMOND ELEMENTS, METHODS OF MANUFACTURING THE SAME, AND APPLICATIONS THEREFOR

摘要

In an embodiment, a polycrystalline diamond compact includes a substrate and a preformed polycrystalline diamond table bonded to the substrate. The table includes bonded diamond grains defining interstitial regions. The table includes an upper surface, a back surface bonded to the substrate, and at least one lateral surface extending therebetween. The table includes a first region extending inwardly from the upper surface and the lateral surface. The first region exhibits a first interstitial region concentration and includes at least one interstitial constituent disposed therein, which may be present in at least a residual amount and includes at least one metal carbonate and/or at least one metal oxide. The table includes a second bonding region adjacent to the substrate that extends inwardly from the back surface. The second bonding region exhibits a second interstitial region concentration that is greater than the first interstitial region concentration and includes a metallic infiltrant therein.

主权项

1. A polycrystalline diamond element, comprising:
a body including a plurality of bonded diamond grains at least partially defining a plurality of interstitial regions, an upper surface, a back surface, and at least one lateral surface extending between the upper surface and the back surface, the body including:
a first region extending inwardly from the upper surface and the at least one lateral surface, the first region exhibiting a first interstitial region concentration and including at least one interstitial constituent disposed in at least a portion of the plurality of interstitial regions of the first region, the at least one interstitial constituent including one or more of at least one metal carbonate or at least one metal oxide; anda second region extending inwardly from the back surface, the second region exhibiting a second interstitial region concentration that is greater than the first interstitial region concentration.