Polycrystalline compacts having material disposed in interstitial spaces therein, and cutting elements including such compacts
US8727042B2 · kind B2 · utility
24Cited by
33References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 11, 2009 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Feb 13, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/783
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Polycrystalline compacts include smaller and larger hard grains that are interbonded to form a polycrystalline hard material. The larger grains may be at least about 150 times larger than the smaller grains. An interstitial material comprising one or more of a boride, a carbide, a nitride, a metal carbonate, a metal bicarbonate, and a non-catalytic metal may be disposed between the grains. The compacts may be used as cutting elements for earth-boring tools such as drill bits, and may be disposed on a substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.