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过渡相析出对SiO₂-Al₂O₃-MgO-F系玻璃陶瓷析晶的影响

Influences of Transient Phases on Crystallization Behavior of SiO₂-AI₂O₃-MgO-F Glass System

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【Author】 Wang Yue Pan Yuefei Tian Qingbo(Department of Materials Science and Engineering, Shandong Institutes of Architectures and Engineering Jinan 250014)

【机构】山东建筑工程学院材料系；山东建筑工程学院材料系济南 250014；济南 250014；济南 250014；

【摘要】应用Kissinger法研究了过渡相析出对SiO2-Al2O3-MgO-F系玻璃陶瓷析晶动力学的影响。结果表明:过渡相析出后,将促进主晶相的整体析出。根据John-Mehl-Avrami(JMA)方程,得到玻璃结晶转变的反应生长指数n为2,活化能A为214.03KJ.mol-1。更多还原

【Abstract】 the influence of transient phases on crystallization behavior in the SiO2-MgO-Al2O3-F glass was investigated on the base of Kissinger method.The results showed that in the glass system studide transient phases? precipitation promoted the bulk crystallization. By the aid of John-Mehl-Avram function,the parameters of kinetics,reaction order n=2,and activity energy A=214.03kJ·mol-1were calculated respectively.更多还原

【关键词】玻璃陶瓷；过渡相；析晶；动力学；
【Key words】 Glass-ceramics Transient Phases Crystallization Kinetics；