SUPERABRASIVE ELEMENTS

摘要

Embodiments of the invention relate to thermally-stable polycrystalline diamond (“PCD”) elements, polycrystalline diamond compacts (“PDCs”), and methods of fabricating such PCD elements and PDCs. In an embodiment, a method of fabricating a thermally-stable PCD element includes providing an at least partially leached PCD body including a plurality of interstitial regions, and infiltrating at least a portion of the interstitial regions of the at least partially leached PCD body with at least a portion of an infiltrant material. The infiltrant material may include at least one member chosen from the group of glass, silicone, and a ceramic having a negative coefficient of thermal expansion.

主权项

1. A superabrasive element, comprising:
a plurality of bonded superabrasive grains defining a plurality of interstitial regions; at least one material disposed in at least a portion of the plurality of interstitial regions, wherein the at least one material exhibits a coefficient of thermal expansion less than that of cobalt; and a catalyst used to initially sinter the plurality of bonded superabrasive grains disposed in at least a portion of the plurality of interstitial regions.