Crystallizable glass and crystallized glass of Li2O-A12O3-SiO2 system and method for producing crystallized glass of 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 and crystallized glass of Li₂O—Al₂O₃—SiO₂ system consist 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 %. A method for producing a crystallized glass of Li₂O—Al₂O₃—SiO₂ system is also provided.