公开(公告)号：EP3201149A4

公开(公告)日：2018-06-06

申请号：EP15845659

申请日：2015-10-01

Applicant: CORNING INC

Inventor： GOMEZ SINUE ,  GUO XIAOJU ,  HU GUANGLI ,  SMITH NICHOLAS JAMES ,  TANG ZHONGZHI ,  ZHOU CHUNFENG

IPC: C03C17/00 ,  C03C17/06 ,  C03C21/00

CPC classification number: C03C21/002 ,  C03C23/009

Abstract: Disclosed herein are methods for ion exchanging, e.g., chemically strengthening, a substrate, the methods comprising applying a first electrode to at least one first region on a first surface of the substrate and applying a second electrode to at least one second region on an opposing second surface of the substrate, wherein the substrate comprises mobile ions, e.g., metal ions chosen from alkali metal ions, alkaline earth metal ions, transition metal ions, and combinations thereof; applying voltage between the first and second electrodes sufficient to cause the mobile ions to migrate away from the at least one first region on the first surface; and treating the substrate by ion exchange, e.g., chemically strengthening the substrate. Also disclosed herein are substrates, e.g., glass, glass-ceramic, and ceramic substrates, produced by the methods disclosed herein.