Method of making fused silica-containing material
US4363647A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1981 |
| Grant date | Dec 14, 1982 |
| Priority date | — |
| Expiry date | May 14, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2207/66
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention is directed to the production of fused silica-containing glass articles of large cross section or diameter wherein at least a surface layer thereof exhibits very high optical quality. The method involves depositing via flame hydrolysis/oxidation reaction a layer of fused silica-containing soot onto a supporting bait, essentially immediately thereafter applying a source of heat concentrated uniformly across the breadth of the soot deposit, but focused only over a relatively small area thereof, to raise the temperature within that area sufficiently to uniformly consolidate the soot in that area into a non-porous glass, and then cooling the glass to room temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.