Preparation of low-carbon vanadium nitride
US4562057A · kind A · utility
3Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1984 |
| Grant date | Dec 31, 1985 |
| Priority date | — |
| Expiry date | Mar 29, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B21/0828
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A low-carbon vanadium nitride is prepared in a furnace at an elevated temperature of about 1400.degree. C. under nitrogen atmosphere from a feed material containing a mixture of vanadium oxynitride and carbon. The vanadium oxynitride is prepared by the partial ammonia reduction of a vanadium-containing oxidic compound such as ammonium metavanadate (NH.sub.4 VO.sub.3) or oxides of vanadium such as V.sub.2 O.sub.3 and V.sub.2 O.sub.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.