Method of producing fine coated tungsten carbide particles
US6641918B1 · kind B1 · utility
17Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 2000 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | May 30, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Geldhart class C tungsten carbide particles are provided with a discontinuous coating of grain growth inhibitor. Further, the fine tungsten carbide coatings are preferably provided with a continuous coating of another discreet phase material, such as, for example, a continuous coating of cobalt. Compacts produced using such materials are particularly useful as WC—Co hardmetals wherein the compacts are extremely fine grained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.