リチウムアルミノケイ酸塩結晶の超低熱膨張特性

Abstract

Thermal reaction of petalite (LiAlSi4O10) and petalite/kaolin mixtures were examined with respect of phase change of petalite to spodumene (LiAlSiO6) via metastable β-quartz solid solutions and of thermal expansion properties. By a thermal reaction of petalite with silica and alumina, β-quartz solid solutions appeared in wide temperature range between 1000 and 1200℃. Ultra-low thermal expansion propety of β-quartz solid solution is expected to perform in many applications as superior thermal shock resistant materials.