Cutting elements including nanoparticles in at least one portion thereof, earth-boring tools including such cutting elements, and related methods
US8985248B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2011 |
| Grant date | Mar 24, 2015 |
| Priority date | — |
| Expiry date | May 7, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/5735
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Cutting elements comprise a multi-portion polycrystalline material. At least one portion of the multi-portion polycrystalline material comprises a higher volume of nanoparticles than at least another portion. Earth-boring tools comprise a body and at least one cutting element attached to the body. The at least one cutting element comprises a hard polycrystalline material. The hard polycrystalline material comprises a first portion comprising a first volume of nanoparticles. A second portion of the hard polycrystalline material comprises a second volume of nanoparticles. The first volume of nanoparticles differs from the second volume of nanoparticles. Methods of forming cutting elements for earth-boring tools comprise forming a volume of superabrasive material, including forming a first portion of the superabrasive material comprising a first volume of nanoparticles. A second portion of the superabrasive material is formed comprising a second volume of nanoparticles, the second volume differing from the first volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.