三组份锂质瓷烧成中的物相变化

Phase Change of Triaxial Spodumene Ceramics in Firing

本文研究了三组份锂质瓷烧成过程中的物相变化。试验证明：１０００℃以上β－锂辉石与Ａｌ－Ｓｉ尖晶石、石英反应生成β－锂辉石固溶体，随温度升高，β－锂辉石固溶体中ＳｉＯ２量增加，其ｄ（２０１）值变小；降温过程中，β－锂辉石固溶体从液相中析出，析晶速度较快时，其ｄ（２０１）值较小。

In this paper,the phase change of triaxial spodumene ceramics in firing was studied.According to our experiments,above 1000℃,β spodumene solid solution was formed through the reaction between β spodumene and Al Si spinelle as well as quartz.With the rising of temperature,the quantity of SiO 2 in β spodumene solid solution increased and solid solutions d(201) reduced.During cooling,β spodumene solid solution crystallized out of liquid phase,the faster the crystallizing speed is,the smaller the d(201) of β spodumene solid solution is.