Firing sol-gel alumina particles
US5785722A · kind A · utility
95Cited by
9References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 22, 1997 |
| Grant date | Jul 28, 1998 |
| Priority date | — |
| Expiry date | Aug 22, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K3/1418
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Sol-gel alumina that is dried but unfired can be explosively comminuted by feeding the dried gel into a furnace held at temperatures above those at which vaporizable materials are eliminated from the particles of gel. At suitably elevated temperatures the firing is sufficient to form fully densified alpha alumina particles of a size suitable for direct use as abrasive grits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.