| Al_2O_3含量对CaO－Al_2O_3－SiO_2玻璃结构单元Q_n分布影响 |
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| 引用本文： | 杨晓晶,李家治,许淑惠. Al_2O_3含量对CaO－Al_2O_3－SiO_2玻璃结构单元Q_n分布影响[J]. 陕西科技大学学报, 1994, 0(2) |
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| 作者姓名： | 杨晓晶 李家治 许淑惠 |
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| 作者单位： | 中科院上海硅酸盐研究所 |
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| 摘 要： | 利用Ｒａｍａｎ光谱并对谱带进行高斯线型拟合，研究了ＣａＯ／ＳｉＯ２＝１／２玻璃中引入３、６、９ｍｏｌ％的Ａｌ２Ｏ３后结构单元Ｑｎ分布的变化。发现链状结构单元丰度减小，层状结构单元增多，而三维网络结构单元的丰度基本不变。根据这个结果解释了Ａｌ２Ｏ３对玻璃分相和析晶的抑制作用。
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| 关 键 词： | CaO—Al_2O_3—SiO_2玻璃；结构单元；Raman光谱；分相；析晶 |
EFFECT OF Al_2O_3 ON THE DISTRIBUTION OF STRUCTURAL UNIT Q_n IN THE CaO --Al_2O_3--SiO_2GLASSES BY RAMAN SPECTROSCOPY |
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| Yang Xiaojing Li jiazhi Xu Shuhui. EFFECT OF Al_2O_3 ON THE DISTRIBUTION OF STRUCTURAL UNIT Q_n IN THE CaO --Al_2O_3--SiO_2GLASSES BY RAMAN SPECTROSCOPY[J]. Journal of Shaanxi University of Science & Technology(Natural Science Edition), 1994, 0(2) |
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| Authors: | Yang Xiaojing Li jiazhi Xu Shuhui |
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| Affiliation: | Yang Xiaojing Li jiazhi Xu Shuhui |
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| Abstract: | The change of the distribution of structural unit Q. types was studied by use of Raman spectroscopy to whose spectrum Gaussian curves was fitted,as Al2O3 content increases by 3, 6 and 9 mol% in the glass with CaO/SiO2=1/2. It was found that the aboundence of chain --unit, Q2, decreases, that of sheet unit Q3 increases, and that of 3 --dimension network Q4 unit remains almost the same. The inhibiting effect of Al2O3 on phase separation and crystallization of the glass was explained according to the result. |
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| Keywords: | CaO -- Al_2O_3 -- SiO_2 glass structural unit Raman spectroscopy phase separation crystallization |
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