Method of making nanocrystalline alpha alumina
US5128081A · kind A · utility
49Cited by
12References
2Claims
0Family size
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Key dates
| Filing date | Dec 5, 1989 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | Dec 5, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/21
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Method of making selected phases of nanocrystalline ceramic materials. Various methods of controlling the production of nanocrystalline alpha alumina and titanium oxygen phases are described. Control of the gas atmosphere and use of particular oxidation treatments give rise to the ability to control the particular phases provided in the aluminum/oxygen and titanium/oxygen system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.