摘要
Na2O-CaO-A l2O3-SiO2系统微晶玻璃是一种新型建筑材料,该材料不仅具有一定的力学性能,还具有良好的装饰效果。本文采用差热分析(DTA)方法对Na2O-CaO-A l2O3-SiO2系统微晶玻璃的析晶动力学参数进行了测定,研究了该系统微晶玻璃析晶动力学。其结果表明:随着CaO含量的增加,该系统微晶玻璃的析晶活化能E和动力学析晶参数k(Tp)总体上是上升的。晶化指数n均小于3,表明该系统微晶玻璃以表面析晶的方式析晶。
Na2O-CaO-Al2O3-SiO2 glass -ceramics is a new kind of constructional material. It not only provides with good mechanical properties, but also possesses of good decorative effects. The kinetic parameters of this glass -ceramics were calculated by differential thermal analysis（DTA） , and the crystallization kinetic of this glass -ceramics system was investigated. The results indicate that the crystallization activation energy （E） and kinetic crystallization parameter k （Tp） increase with increasing CaO content eventually. The crystalline indexes （n） are all less than 3 and indicate that for this glass- ceramic system the crystallization process is surface crystallization.
出处
《玻璃与搪瓷》
CAS
2005年第6期5-9,17,共6页
Glass & Enamel
基金
江西省教育厅资助项目
关键词
微晶玻璃
析晶动力学
差热分析
glass - ceramic
crystallization kinetics
differential thermal analysis （DTA）
