Fine-grained WC-Co cemented carbide
US6228139A · kind A · utility
87Cited by
14References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 26, 2000 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Apr 26, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2999/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to a method of making a WC--Co-based cemented carbide with a sintered mean WC-grain size in the range 0.4-1.6 .mu.m. the cemented carbide is produced from well deagglomerated or easy to deagglomerate WC powder with round morphology, a Co powder also well deagglomerated or easy to deagglomerate and with a grain size equal to or smaller than the WC grain size and grain growth inhibitors. According to the invention the metal part of the grain growth inhibitors is added as part of the binder phase i.e., is included in the Co powder and alloyed therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.