Corning Incorporated
Lithium containing glass or glass ceramic article with modified K.sub.2O profile near the glass surface

Abstract:

A method of reworking lithium containing ion exchanged glass articles is provided. The method includes a reverse ion exchange process that returns the glass article to approximately the composition of the glass from which the glass article was produced, before being subjected to ion exchange. The reworked glass articles exhibit a K.sub.2O concentration profile comprising a portion wherein a K.sub.2O concentration increases to a local K.sub.2O concentration maximum.