Method of making porous ceramic fluoride
US4969943A · kind A · utility
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8References
2Claims
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Key dates
| Filing date | Jun 8, 1989 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Jun 8, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/553
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for making a porous ceramic composite where fumed silica particles are coated with a nitrate, preferably aluminum nitrate. Next the nitrate is converted to an oxide and formed into a desired configuration. This configuration is heated to convert the oxide to an oxide silicate which is then react with HF, resulting in the fluoride ceramic, preferably aluminum fluoride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.