Polycrystalline diamond compact including pre-sintered polycrystalline diamond table having a thermally-stable region and applications therefor
US8808859B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2011 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Oct 31, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In an embodiment, a polycrystalline diamond compact (“PDC”) comprises a substrate and a pre-sintered polycrystalline diamond (“PCD”) table including a plurality of bonded diamond grains defining a plurality of interstitial regions, an upper surface, and a back surface that is bonded to the substrate. The pre-sintered PCD table includes a first thermally-stable region extending inwardly from the upper surface, and a second region located between the first thermally-stable region and the substrate. The second region exhibits a thermal stability that is less than that of the first thermally-stable region, and includes at least one interstitial constituent disposed interstitially between the bonded diamond grains thereof. The at least one interstitial constituent may include at least one silicon-containing phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.