| 含F-锂镁铝硅微晶玻璃的制备及晶化行为的研究 |
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| 引用本文： | 周曦亚,刘林凤,周斌扬,胡俊. 含F-锂镁铝硅微晶玻璃的制备及晶化行为的研究[J]. 材料导报, 2009, 23(Z2) |
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| 作者姓名： | 周曦亚 刘林凤 周斌扬 胡俊 |
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| 作者单位： | 华南理工大学材料学院教育部功能材料重点实验室,广州,510640 |
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| 摘 要： | 采用熔融烧结法,引入一定量的MgF2,制备出LMASF系微晶玻璃,采用DTA、XRD对该微晶玻璃的析晶温度和物相组成进行了分析,并采用SEM观察了微晶玻璃的断面形貌.讨论了热处理对微晶玻璃析晶的影响,并对其晶化行为和微观形貌进行了研究.实验结果表明,该微晶玻璃首先析出LixAlx Si1-xO2晶体,后随着温度的升高析出β-锂辉石晶体;最佳晶化温度为786℃,在该温度下保温2h,析出棒状β-锂辉石晶体,晶体长度为2～5μm,长径比较大.
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| 关 键 词： | 熔融烧结法 LMASF系微晶玻璃 晶化行为 |
Preparation of LMAS Glass-Ceramic with F- and Study on Its Crystallization Behaviors |
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| ZHOU Xiya,LIU Linfeng,ZHOU Binyang,HU Jun. Preparation of LMAS Glass-Ceramic with F- and Study on Its Crystallization Behaviors[J]. Materials Review, 2009, 23(Z2) |
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| Authors: | ZHOU Xiya LIU Linfeng ZHOU Binyang HU Jun |
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| Abstract: | By adding a certain amount of MgF2 in the raw materials, LMASF glass-ceramic is prepared by the melting-sintering method. The crystallization temperature, phase compositions and the surface topography are investigated by DTA, XRD and SEM, the influence of heating-treatment on its crystallization is discussed, the crystallization behaviors and the micro morphology are also analyzed. The results show that the optimum crystallization condition is insulating 2h at 786℃. Based on this condition,massive rod-shape β-spodumene with fine length-diamete ratio is abtained,and its length is 2～5μm. |
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| Keywords: | melting-sintering method LMASF glass-ceramic crystallization behavior |
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