Polycrystalline diamond compact including a pre-sintered polycrystalline diamond table including a nonmetallic catalyst that limits infiltration of a metallic-catalyst infiltrant therein and applications therefor
US9103172B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2009 |
| Grant date | Aug 11, 2015 |
| Priority date | — |
| Expiry date | Jul 22, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Embodiments of the invention relate to thermally-stable polycrystalline diamond compacts (“PDCs”), and methods of fabricating such PDCs. In an embodiment, a PDC includes a substrate and a pre-sintered polycrystalline diamond (“PCD”) table bonded to the substrate. The pre-sintered PCD table includes bonded diamond grains defining a plurality of interstitial regions. The pre-sintered PCD table further including a first region remote from the substrate including a nonmetallic catalyst and a metallic catalyst each of which is disposed interstitially between the bonded diamond grains thereof, and a second region bonded to the substrate including a metallic-catalyst infiltrant disposed interstitially between the bonded diamond grains thereof. A nonplanar boundary is located between the first region and the second region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.