Corning Incorporated
LAMINATED GLASS ARTICLE WITH ION EXCHANGEABLE CORE AND CLAD LAYERS HAVING DIFFUSIVITY CONTRAST AND METHOD OF MAKING THE SAME

Abstract:

A laminated glass article has a first layer having a first ion exchange diffusivity, D.sub.0, and a second layer adjacent to the first layer and having a second ion exchange diffusivity, D.sub.1. D.sub.0/D.sub.1 is from about 1.2 to about 10, or D.sub.0/D.sub.1 is from about 0.05 to about 0.95. A method for manufacturing the laminated glass article includes forming a first layer having a first ion exchange diffusivity, D.sub.0, and forming a second layer adjacent to the first layer and having a second ion exchange diffusivity, D.sub.1. The laminated glass article can be strengthened by an ion exchange process to form a strengthened laminated glass article having a compressive stress layer with a depth of layer from about 8 .mu.m to about 100 .mu.m.