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首页> 外文期刊>European Journal of Glass Science and Technology, PartB. Physics and Chemistry of Glasses >Effect of glass composition and heat treatment parameters on crystallisation behaviour in the Li_2O-BaO-Al_2O_3-SiO_2 system
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Effect of glass composition and heat treatment parameters on crystallisation behaviour in the Li_2O-BaO-Al_2O_3-SiO_2 system

机译：玻璃组成和热处理参数对Li_2O-BaO-Al_2O_3-SiO_2体系中结晶行为的影响

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摘要

The crystallisation of some glasses based on the celsian-spodumene system was studied.Hexacelsian and(3-eucryptite solid solution were the primary crystalline phases developed.With increasing time and temperature of heat-treatment,beta-eucryptite solid solution transformed into beta-spodumene solid solution(at 1050deg C for 30 h)in spodumene rich glasses while sluggish transformation of the metastable hexacelsian into its stable monoclinic celsian.It has been found that increasing the content of the celsian phase in the glasses,results in an increased bulk crystallisation.Phases association,transformation and extent of solid solutions development have been followed by DTA,x-ray diffraction and polarising microscope.It has been found that beta-eucryptite solid solution is transformed into beta-spodumene solid solution at 1050deg C in spodumene rich glasses while in glasses rich celsian beta-eucryptite solid solution is sluggish transformed into beta-spodumene at 1050deg C.In the glasses studied hexcacelsian is transformed into stable monoclinic celsian at 1050deg C for 40 h.
机译：研究了一些基于celsian-spodumene系统的玻璃的结晶。以六方晶和（3-锂霞石固溶体）为主要结晶相。随着热处理时间和温度的升高，β-锂霞石固溶体转变为β-锂辉石。在富含锂辉石的玻璃中固溶（在1050摄氏度下持续30小时），同时将亚稳态六晶硅缓慢转化为稳定的单斜晶硅。已发现，增加玻璃中的钙相的含量会导致整体结晶的增加。通过DTA，x射线衍射和偏光显微镜观察了固溶体的相缔合，转化和程度。发现在富锂辉石的玻璃中，β-锂霞石固溶体在1050℃转化为β-锂辉石固溶体。在玻璃中，富含celsianβ-锂霞石的固溶体在1050°C下缓慢地转变为β-锂辉石。研究的六方体在1050°C转化为稳定的单斜面体40 h。

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