Controlled crystallization of glass-ceramics with two nucleating agents
Controlled crystallization of glass-ceramics with two nucleating agents
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DOI：
10.1016/j.matchar.2009.09.001
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发表时间：
2009-12-01
影响因子：
4.7
通讯作者：
Mao, Dali
中科院分区：
文献类型：
--
作者：
Hu, Anmin;Li, Ming;Mao, Dali
以Li 2 O-Al 2 O3-SiO2系统微晶玻璃为研究对象，采用2%ZrO2和不同量的TiO 2作为晶核剂，研究了晶核剂的最佳配比。由DTA和结果获得的LAS玻璃的析晶活化能（E）和Avrami参数（n）表明，最有效的TiO 2添加量为约2.36wt.%。在最佳晶核剂（2%ZrO2 + 2.36%TiO2）的加入量下，由于晶化后形成β-石英固溶体，得到了晶粒细小、透明性高、力学性能好的LAS微晶玻璃。(C)2009 Elsevier Inc. All rights reserved.
The optimum nucleating agent had been investigated in Li2O-Al2O3-SiO2 glass-ceramics system with 2% ZrO2 and different amounts of TiO2 as nucleating agents. The activation energy (E) of crystallization and the Avrami parameter (n) for the LAS glasses obtained from the DTA and results show that the most effective addition of TiO2 was about 2.36 wt.%. With the optimum nucleating agents (2% ZrO2 + 2.36% TiO2) addition, LAS glass-ceramics with fine grain, high transparency and good mechanical properties were obtained, due to the beta-quartz solid solution formed after the crystallization process. (C) 2009 Elsevier Inc. All rights reserved.