초록 ▼

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

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.

대표청구항 ▼

A process for strengthening a glass article, comprising the steps of: (a) 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 wherein said cation is selected from the group consisting of sodium, potassium, l

A process for strengthening a glass article, comprising the steps of: (a) 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 wherein said cation is selected from the group consisting of sodium, potassium, lithium, silver, copper, and mixtures thereof; (b) coating the surface of said glass article with a source of a second cation, wherein: said second cation has an ionic radius larger than that of said first cation, and 2. said second cation is selected from the group consisting of sodium, potassium, silver, copper, and mixtures thereof; and, thereafter (c) subjecting said coated glass article to a source of microwave radiation at a frequency of from about 0.9 to about 22.1 Gigaherz, whereby said second cation is caused to penetrate the surface of said glass article to a depth of from about 10 to about 100 microns.