Method of making a sol-gel glass body and removing same from mol

Details Method of making a sol-gel glass body and removing same from mol Method of making a sol-gel glass body and removing same from mol

1995-09-01

1996-11-26

Czaja, Donald E.

Glass manufacturing

Processes

Sol-gel or liquid phase route utilized

65395, 65 24, 65495, 264430, 264405, 423338, C03B 37016

Patent

active

055781012

ABSTRACT:
The disclosed method of making a glass body by a sol/gel process comprises electrochemically assisted release of the gel body from the mold in which the body was formed. More specifically, the method involves gelation of a sol in a mold that comprises a first conductor member, with a second conductor member also being in contact with the sol and/or gel, and causing the flow of a current between the first and second conductor members, with the first member being the cathode. In consequence of the current flow a substantially liquid lubricating layer that facilitates removal of the gel body from the melt exists at the cathode/gel interface.

REFERENCES:
patent: 4680047 (1987-07-01), Clasen et al.
patent: 4684385 (1987-08-01), Clasen
patent: 4806137 (1989-02-01), Virey
patent: 5004626 (1991-04-01), Dong et al.
patent: 5021369 (1991-06-01), Ackerman et al.
patent: 5240488 (1993-08-01), Chandross et al.
patent: 5322725 (1994-06-01), Ackerman et al.

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