Crystallizable glass and crystallized glass of Li2O-A12O3-SiO2 system and method for producing crystallized glass fo Li2O-A12O3-SiO2 system

摘要

A crystallizable glass of Li₂O—Al₂O₃—SiO₂ system is provided, which can be crystallized by a crystallization process at a lower temperature to produce crystallized glass of Li₂O-Al₂O₃—SiO₂ system with excellent thermal characteristics. The crystallizable glass of Li₂O—Al₂O₃—SiO₂ system which consists essentially of, by weight percentages, SiO₂—58.0˜66.0 wt %; Al₂O₃—18.0˜26.0 wt %; Li₂O—3.5˜5.5 wt %; TiO₂—0.5-4.0 wt %; ZrO₂—0.5˜3.0 wt % P₂O₅—0.5˜3.0 wt %; F—0.1˜1.0 wt %; B₂O₃—0˜2.5 wt %; Na₂O—0˜2.0 wt %; K₂O—0˜2.0 wt %; MgO—0˜1.0 wt %; ZnO—0.5˜3.0 wt %; BaO—0˜2.5 wt %; SrO—0.3˜3.0 wt % As₂O₃—0.4˜1.5 wt %; and Sb₂O₃—0˜1.5 wt %.