Electrically melted multiphase material based on alumina and aluminium oxycarbide and oxynitride
US5023212A · kind A · utility
47Cited by
8References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 31, 1989 |
| Grant date | Jun 11, 1991 |
| Priority date | — |
| Expiry date | Oct 31, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/653
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention concerns a multiphase alumina-based material formed by a matrix of corundum in which microcrystalline phases of aluminium oxycarbide, aluminium oxynitride and aluminium oxycarbonitride are homogeneously dispersed. The combined carbon content is between 0.05 and 5% and the combined nitrogen content is from 0.05 to 5% by weight. The material can be produced by the controlled injection of carbon and nitrogen into a molten alumina bath. The material is used for abrasive products and refractory products with high levels of performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.