Patent ID: 8919150
Filing Date: 2014-12-30
Classification: C03C,G11B

Abstract:
1. A method of manufacturing an ion-exchanged glass article, comprising: an ion-exchange step of bringing a glass article with a composition containing Li into contact with a molten salt dissolved solution containing an alkali metal element having an ionic radius larger than an ionic radius of the Li contained in the glass article, thereby ion-exchanging the Li in the glass article with the alkali metal element in the molten salt dissolved solution, wherein at least one kind of additive selected from a group consisting of NaF, KF, K wherein the additive reacts with Li ions eluted from the glass article into the molten salt dissolved solution to form a solid precipitate so that concentration of the Li ions is lowered in the molten salt dissolved solution, and wherein a melting point of the precipitate is higher than the temperature of the molten salt dissolved solution.