Method of making fused silica-containing material

Details Method of making fused silica-containing material Method of making fused silica-containing material

1981-05-14

1982-12-14

Fisher, Richard V.

Glass manufacturing

Processes

With shaping of particulate material and subsequent fusing...

65 608, C03B 1906, C03B 2000

Patent

active

043636470

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.

REFERENCES:
patent: 2272342 (1942-02-01), Hyde
patent: 3620702 (1971-11-01), DeKalb et al.
patent: 4042404 (1977-08-01), Schultz
patent: 4045198 (1977-08-01), Rau et al.
patent: 4230472 (1980-10-01), Schultz
Savelev et al., "Strengthening Vitreous Silica", translated from Steklo: Keramika, No. 10, Oct. 1975, pp. 11-13.

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