Hard metal composition
US4626281A · kind A · utility
3Cited by
8References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 7, 1985 |
| Grant date | Dec 2, 1986 |
| Priority date | — |
| Expiry date | May 7, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C27/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A composition of matter having a Rockwell A hardness of at least 85 is formed from a precursor mixture comprising between 3 and 10 weight percent boron carbide and the remainder a metal mixture comprising from 70 to 90 percent tungsten or molybdenum, with the remainder of the metal mixture comprising nickel and iron or a mixture thereof. The composition has a relatively low density of between 7 to 14 g/cc. The precursor is preferably hot pressed to yield a composition having greater than 100% of theoretical density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.