Polycrystalline diamond compact including at least one thermally-stable polycrystalline diamond body and applications therefor
View Patent ↗Embodiments of the invention relate to PDCs including at least one thermally-stable PCD body disposed at least partially within a substrate, and methods of fabricating such PDCs. In an embodiment, a PDC comprises a substrate including a at least one substrate recess formed therein, and at least one thermally-stable PCD body including an upper surface, a back surface, and at least one lateral surface. The at least one thermally-stable PCD body is at least partially received by the at least one substrate recess. Other embodiments include applications utilizing the disclosed PDCs in various articles and apparatuses, such as rotary drill bits.
1. A polycrystalline diamond compact for use in a subterranean drilling apparatus, comprising:
a substrate including a plurality of substrate recesses formed therein;
a plurality of barrier receptacles each of which is made from a refractory material and defines a receptacle recess, each of the plurality of barrier receptacles received by a corresponding one of the plurality of substrate recesses; and
a plurality of thermally-stable polycrystalline diamond bodies each of which includes an upper surface, a back surface, and at least one lateral surface, each of the plurality of thermally-stable polycrystalline diamond bodies at least partially received by a corresponding one of the plurality of receptacle recesses, the back surface and at least a portion of the at least one lateral surface of each of the plurality of thermally-stable polycrystalline diamond bodies directly bonded to a corresponding one of the plurality of barrier receptacles.
2. The polycrystalline diamond compact of claim 1 wherein:
each of the plurality of the barrier receptacles is high-pressure/high-temperature bonded to the substrate; and
the back surface and the at least a portion of the at least one lateral surface of each of the plurality of thermally-stable polycrystalline diamond bodies are high-pressure/high-temperature bonded to the corresponding one of the plurality of barrier receptacles.
3. The polycrystalline diamond compact of claim 1 wherein each of the plurality of barrier receptacles and each of the plurality of thermally-stable polycrystalline diamond bodies are interference fit with the substrate.
4. The polycrystalline diamond compact of claim 1 wherein the barrier receptacle comprises at least one refractory material selected from the group consisting of tungsten, zirconium, niobium, vanadium, molybdenum, tantalum, and alloys thereof.
5. The polycrystalline diamond compact of claim 1 wherein the at least one lateral surface of each of the plurality of thermally-stable polycrystalline diamond bodies is substantially completely covered by the barrier receptacle.
6. The polycrystalline diamond compact of claim 1 wherein the at least one lateral surface of each of the plurality of thermally-stable polycrystalline diamond bodies comprises an exposed first portion extending from the corresponding one of the plurality of barrier receptacles and a second portion bonded to the corresponding one of the plurality of barrier receptacles.
7. The polycrystalline diamond compact of claim 1 wherein the substrate comprises an upper surface and wherein the upper surface of each of the plurality of thermally-stable polycrystalline diamond bodies is substantially co-planar with the upper surface of the substrate.
8. The polycrystalline diamond compact of claim 1 wherein at least one of the plurality of thermally-stable polycrystalline diamond bodies comprises an at least partially leached polycrystalline diamond body.
9. The polycrystalline diamond compact of claim 1 wherein at least one of the plurality of thermally-stable polycrystalline diamond bodies comprises a plurality of bonded diamond grains defining a plurality of interstitial regions including at least one of silicon carbide, cobalt carbide, a cobalt-silicon alloy, or a nonmetallic catalyst disposed therein.
10. The polycrystalline diamond compact of claim 1 wherein a generally cylindrical lateral periphery of the polycrystalline diamond compact is partially defined by the at least one lateral surface of each of the plurality of thermally-stable polycrystalline diamond bodies.
11. The polycrystalline diamond compact of claim 1 wherein a generally cylindrical lateral periphery of the polycrystalline diamond compact is defined by the substrate.
12. A rotary drill bit comprising a bit body including a plurality of polycrystalline diamond cutting elements affixed thereto, at least one of the plurality of polycrystalline diamond cutting elements configured as the polycrystalline diamond compact of claim 1 .
13. A polycrystalline diamond compact for use in a subterranean drilling apparatus, comprising:
a substrate including a plurality of substrate recesses formed therein;
a plurality of barrier receptacles each of which defines a receptacle recess, each of the plurality of barrier receptacles received by a corresponding one of the plurality of substrate recesses; and
a plurality of thermally-stable polycrystalline diamond bodies each of which includes an upper surface, a back surface, and at least one lateral surface, each of the plurality of thermally-stable polycrystalline diamond bodies at least partially received by a corresponding one of the plurality of receptacle recesses, the at least one lateral surface of each of the plurality of thermally-stable polycrystalline diamond bodies including an exposed first portion extending from a corresponding one of the plurality of barrier receptacles and a second portion bonded to the corresponding one of the plurality of barrier receptacles.
14. The polycrystalline diamond compact of claim 13 wherein:
each of the plurality of the barrier receptacles is high-pressure/high-temperature bonded to the substrate; and
the back surface and the at least a portion of the at least one lateral surface of each of the plurality of thermally-stable polycrystalline diamond bodies are high-pressure/high-temperature bonded to the corresponding one of the plurality of barrier receptacles.
15. The polycrystalline diamond compact of claim 13 wherein each of the plurality of barrier receptacles and each of the plurality of thermally-stable polycrystalline diamond bodies are interference fit with the substrate.
16. The polycrystalline diamond compact of claim 13 wherein the at least one lateral surface of each of the plurality of thermally-stable polycrystalline diamond bodies is substantially completely covered by the barrier receptacle.
17. The polycrystalline diamond compact of claim 13 wherein the substrate comprises an upper surface and wherein the upper surface of each of the plurality of thermally-stable polycrystalline diamond bodies is substantially co-planar with the upper surface of the substrate.
18. The polycrystalline diamond compact of claim 13 wherein at least one of the plurality of thermally-stable polycrystalline diamond bodies comprises an at least partially leached polycrystalline diamond body.
19. The polycrystalline diamond compact of claim 13 wherein at least one of the plurality of thermally-stable polycrystalline diamond bodies comprises a plurality of bonded diamond grains defining a plurality of interstitial regions including at least one of silicon carbide, cobalt carbide, a cobalt-silicon alloy, or a nonmetallic catalyst disposed therein.
20. The polycrystalline diamond compact of claim 13 wherein a generally cylindrical lateral periphery of the polycrystalline diamond compact is partially defined by the at least one lateral surface of each of the plurality of thermally-stable polycrystalline diamond bodies.
21. The polycrystalline diamond compact of claim 13 wherein a generally cylindrical lateral periphery of the polycrystalline diamond compact is defined by the substrate.
22. The polycrystalline diamond compact of claim 13 wherein each of the plurality of barrier receptacles is made from a refractory material.
23. The polycrystalline diamond compact of claim 22 wherein the refractory material comprises at least one refractory material selected from the group consisting of tungsten, zirconium, niobium, vanadium, molybdenum, tantalum, and alloys thereof.
24. A rotary drill bit comprising a bit body including a plurality of polycrystalline diamond cutting elements affixed thereto, at least one of the plurality of polycrystalline diamond cutting elements configured as the polycrystalline diamond compact of claim 13 .