以溶膠-你擬膠法製備鋰鋁矽酸鹽玻璃陶瓷透明體之研究

Abstract

本實驗成功的 LAS powder and monoliths were prepared by the sol-gel process from the following starting metal alkoxides, LiOCH3, Al(OC2h9)3, Si(OC2H5)4 and Zr(OC3H7)4. The distinction of ph values caused by the differentconcentration of lithium methoxide leads to the differences between powders andmonoliths, respectively. On heatin green compacts and monoliths, stuffed B-quatzcrystals were first precipitated, followed by precipitation of B- spodumene crstalsin the composition Li20*Al203*7SiO2 with 4 wt% ZrO2 comprised B-xpodumene and virgilite as its major crystallized phases. Minor crystals of zirconia were pricipitated in both compositionsLi20*Al203*2SiO2 with 4 wt% ZrO2 could be made semo-transparent inth suitalbe heat treatment.