Precipitate-strengthened hard metal-diamond composite
US12110744B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2021 |
| Grant date | Oct 8, 2024 |
| Priority date | — |
| Expiry date | Sep 28, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/80
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cutting table for a cutting element, including: a diamond phase; a tungsten carbide phase; a cobalt-tungsten metallic phase; and an intermetallic phase comprising Co3WCx, where 0≤x≤1. Also disclosed is a method of manufacturing a cutting element, the method including: sintering diamond and tungsten carbide particles in the presence of Co and W to about 1520° C. or greater under pressure of about 57 kbar or greater to form a hard metal-diamond composite compact and solubilize carbon and tungsten within the compact; cooling the cutting element at about 1° C./sec or greater; and subsequent to cooling the cutting element, heat-treating the cutting element to precipitate carbon and tungsten in the compact as an intermetallic phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.