Crystallization Behavior of Glasses in the ZrF4-BaF2-LaF3-AlF3-NaF and HfF4-BaF2-LaF3-AlF3-NaF Systems Modified with Chlorine and Bromine Ions

被引：4
|
作者：
Brekhovskikh, M. N. [1 ]
Moiseeva, L. V. [1 ,2 ]
Shukshin, V. E. [2 ]
Zhidkova, I. A. [1 ]
Egorysheva, A. V. [1 ]
Fedorov, V. A. [1 ]
机构：
[1] Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Leninskii Pr 31, Moscow 119991, Russia
[2] Russian Acad Sci, Prokhorov Gen Phys Inst, Ul Vavilova 38, Moscow 119991, Russia
来源：
INORGANIC MATERIALS | 2019年 / 55卷 / 02期
基金：
俄罗斯科学基金会;
关键词：
fluoride glasses; glass-ceramic; precipitation phases; heat treatment; RARE-EARTH; PRECIPITATION; SPECTRA;
D O I：
10.1134/S0020168519020018
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have prepared glasses in the ZrF4-BaF2-LaF3-AlF3-NaF (ZBLAN) and HfF4-BaF2-LaF3-AlF3-NaF (HBLAN) systems in which fluorine anions are partially replaced by chlorine and bromine anions. Structural changes in the chlorine-substituted glasses have been investigated by Raman spectroscopy and their crystallization behavior has been studied by differential thermal analysis and X-ray diffraction. The results demonstrate a characteristic decrease in glass transition temperature (T-g) and the precipitation of fine-particle crystalline chloride and bromide phases in a temperature range well below the crystallization temperature (T-x) of the fluoride analogues. We have identified phases that crystallize during heat treatment of the glasses at various temperatures.
引用
收藏
页码：173 / 179
页数：7
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