Method of preparing silica glass

Details Method of preparing silica glass Method of preparing silica glass

1992-10-30

1993-08-17

Lindsay, Robert L.

Glass manufacturing

Processes

With shaping of particulate material and subsequent fusing...

65 311, 65 181, 65 24, 65 26, 65111, 65136, 6537413, 6537415, 65901, 264 66, 501 12, C03B 5225

Patent

active

052364836

ABSTRACT:
A method for preparing a silica glass article of improved purity is provided. The article is prepared by a sol-gel method and is then heat treated to a selected temperature between about 1500.degree. and 2200.degree. C. and maintained at the selected temperature for a predetermined period of time sufficient to remove silica crystals, inclusions, microcracks and bubbles. The resulting silica glass articles have improved purity and can be used as photomask substrates or as preforms for optical fibers.

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Matsuyama, Iwao; Ceramic Bulletin, vol. 63, No. 11 (1984), pp. 1408-1411.

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