EVALUATION METHOD OF Li2O-Al2O3-SiO2-BASED CRYSTALLINE GLASS AND PRODUCTION METHOD OF THE CRYSTALLIZED GLASS USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a method for producing Li₂O-Al₂O₃-SiO₂-based crystallized glass without warpage or deflection, even when any ancillary facility for uniformizing temperature distribution is not improved or processing time required for crystallization is not lengthened.;SOLUTION: Crystallization behavior of crystalline glass is evaluated on the basis of a step to prepare Li₂O-Al₂O₃-SiO₂-based crystalline glass, a step to find a temperature T at which shrinkage of the crystalline glass on crystallization becomes maximum and a value X of (full width at half maximum of the shrinkage)/(maximum value of shrinkage) on crystallization, and the temperature T and the value X. Based on the evaluation, the condition of crystallization or the composition is adjusted.;COPYRIGHT: (C)2015,JPO&INPIT