STRENGTHENED GLASS AND METHODS FOR MAKING USING DIFFERENTIAL TIME

摘要

Chemically strengthened glass and a method for making utilizing differential time are provided. The method includes providing a substrate. The substrate includes a glass chemical structure. Host alkali ions are situated in the chemical structure. The substrate has a treatment-rich volume and a treatment-poor volume located as opposed to each other in the substrate. The method also includes providing an exchange medium including invading alkali ions having an average ionic radius that is larger than an average ionic radius of the host alkali ions. The method also includes applying the exchange medium to a surface of the treatment-rich volume for a period of time and applying the exchange medium to a surface of the treatment-poor volume for a modified period of time. The method also includes conducting ion exchange while applying the exchange medium to produce the strengthened substrate.

主权项

1. A method for making a strengthened substrate, the method comprising:
providing a substrate characterized by having
a glass chemical structure including host alkali ions having an average ionic radius situated in the glass chemical structure, andwherein the substrate has dimensional volumes including a treatment-rich volume and a treatment-poor volume located as opposed to each other in the substrate; providing an exchange medium comprising invading alkali ions having an average ionic radius that is larger than the average ionic radius of the host alkali ions; applying the exchange medium to a surface of the treatment-rich volume for a period of time; applying the exchange medium to a surface of the treatment-poor volume for a modified period of time,
wherein the modified period of time is longer than the period of time; and conducting ion exchange while applying the exchange medium to produce the strengthened substrate.