Process for making barium containing silicate glass powders
US6000241A · kind A · utility
14Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1998 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Aug 26, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C12/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A precursor solution composition is provided for making highly pure, fine barium-containing silicate glass powders and specifically barium aluminoborosilicate (BABS) glass powders. An atomized precursor solution containing colloidal silica, a water soluble source of barium, boric acid, and aluminum nitrate is used to make the powders. After mixing, the liquid precursor solution is formed into fine droplets, classified for size, and pyrolyzed into fine powders. The resulting spherical particles of the BABS glass is in the 0.1 to 10 micrometer size range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.