Metal nitride powders
US5395606A · kind A · utility
10Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1993 |
| Grant date | Mar 7, 1995 |
| Priority date | — |
| Expiry date | Nov 3, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2002/72
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A metal nitride powder can be made by heating a reactant powder that includes an oxide or hydroxide of Al, Ti, or Zr to a reaction temperature in a nonreactive atmosphere. The heated reactant powder is contacted with a gaseous reactant mixture comprising a nitrogen source and a carbon source. The molar ratio of nitrogen to carbon in the gaseous reactant mixture is at least about 15. The reactant powder is maintained at the reaction temperature for a sufficient time to convert a portion of it to metal nitride powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.