Production of cobalt and nickel powder
US4545814A · kind A · utility
7Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 1984 |
| Grant date | Oct 8, 1985 |
| Priority date | — |
| Expiry date | May 23, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F9/26
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Ultrafine cobalt and nickel powders are produced from sulfate solutions containing ammonia under hydrogen pressure in the presence of a small amount of a reductant from the group consisting of metal hydrides, metal borohydrides and metal borides. Cobalt powders having a particle size of about 2 micrometers produced in accordance with the invention have been used successfully in the production of cobalt-cemented tungsten carbide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.