Methods of fabricating polycrystalline diamond compacts

摘要

Embodiments of the invention relate to methods of fabricating a polycrystalline diamond compacts and applications for such polycrystalline diamond compacts. In an embodiment, a method of fabricating a polycrystalline diamond compact includes at least saturating a sintering aid material with non-diamond carbon to form a carbon-saturated sintering aid material and sintering a plurality of diamond particles in the presence of the carbon-saturated sintering aid particles to form a polycrystalline diamond table.

主权项

1. A method of fabricating a polycrystalline diamond compact, comprising:
providing an at least partially leached polycrystalline diamond body including a plurality of bonded diamond grains exhibiting diamond-to-diamond bonding therebetween and defining a plurality of interstitial regions; forming an assembly including the at least partially leached polycrystalline diamond body, a substrate, and an at least carbon-saturated infiltrant layer positioned between the at least partially leached polycrystalline diamond body, the at least carbon-saturated infiltrant layer including at least carbon-saturated material at least saturated with non-diamond carbon; and subjecting the assembly to a high-pressure/high-temperature process effective to infiltrate at least a portion of the plurality of interstitial regions of the at least partially leached polycrystalline diamond body with at least a portion of the at least carbon-saturated material from the at least carbon-saturated infiltrant layer.