Process for strengthening glass

Details Process for strengthening glass Process for strengthening glass

1988-05-27

1989-10-10

Kratz, Peter

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

C03C 2100

Patent

active

048728969

ABSTRACT:
There is disclosed a process for strengthening a glass article. This process comprises the steps of: 1. providing a glass article comprised of from about 1 to about 30 weight percent of at least one compound of a first monovalent exchangable cation, 2. coating the surface of said glass article with a source of a second exchangable cation which has an atomic radius larger than that of the first exchangable cation, and thereafter 3. subjecting said coated glass article to a source of microwave radiation at a frequency of from about 0.9 to about 22.1 Gigaherz.

REFERENCES:
patent: 3293016 (1966-12-01), Cernelissey
patent: 3357876 (1967-12-01), Rinehart
patent: 3473906 (1969-10-01), Graham
patent: 3486995 (1969-12-01), Evers
patent: 3607172 (1968-11-01), Poole et al.
patent: 3751238 (1973-08-01), Grego et al.
patent: 3765855 (1973-10-01), Larrick
patent: 4012131 (1977-03-01), Krahn et al.
patent: 4074993 (1978-02-01), Ackerman et al.
patent: 4483700 (1984-11-01), Forker et al.

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