Tempered glass, glass ceramic and ceramic article, and method for producing the same by pressurized ion exchange

摘要

A substrate having an outer region containing a plurality of divalent exchangeable ions, comprising a glass, glass ceramic or ceramic substrate, is immersed in a bath containing a polar solvent and a plurality of divalent ion exchangeable ions A method of treating a substrate is provided, comprising: pressurizing the bath to a predetermined pressure substantially higher than ambient pressure; and heating the bath to a predetermined temperature above ambient temperature. Is done. The method also includes treating the substrate for a predetermined ion exchange period such that some of the plurality of divalent exchangeable ions are exchanged for some of the divalent ion exchangeable ions. . Moreover, the process of treating the substrate results in a greater number of divalent ion-exchangeable ions entering the substrate than divalent exchangeable ions exiting the substrate.