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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Composition-property relationships of the La2O3-Al2O3-SiO2 glass system
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Composition-property relationships of the La2O3-Al2O3-SiO2 glass system

机译：La2O3-Al2O3-SiO2玻璃体系的组成-性质关系

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摘要

We report physical properties of density, glass transition temperature, Vickers hardness and refractive index for 15 La-Al-Si-O glasses within the compositional region 10-28 mol% La2O3, 11-30% Al2O3 and 45-78% SiO2. The glass transition temperature varies only slightly between 871 and 883 degrees C. Both the density (3.25-4.33 g cm(-3)) and refractive index (1.59-1.70) display similar compositional dependencies and are primarily dictated by the La2O3 content. The hardness (6.4-9.0 GPa) increases with decreasing SiO2 content and to a minor extent also with the amount of La2O3 of the glass. The physical properties, in particular the hardness, are discussed with reference to glass structure. The similarity in the observed properties between the present oxide-based glasses and those of analogous rare-earth (RE) element-containing RE-Si-(Al)-O-N oxynitride glasses is highlighted and discussed in relation to the apparent, but hitherto largely neglected, role of RE-ions to primarily control many enhanced physical properties of oxynitride glasses.
机译：我们报告了15-La-Al-Si-O玻璃在10-28 mol％La2O3、11-30％Al2O3和45-78％SiO2组成区域内的密度，玻璃化转变温度，维氏硬度和折射率的物理特性。玻璃化转变温度仅在871至883摄氏度之间略有变化。密度（3.25-4.33 g cm（-3））和折射率（1.59-1.70）都显示出相似的成分依赖性，并且主要由La2O3含量决定。硬度（6.4-9.0 GPa）随着SiO2含量的降低而增加，并且随着玻璃中La2O3含量的增加而在较小程度上增加。参照玻璃结构讨论了物理性质，特别是硬度。本发明的基于氧化物的玻璃与类似的含稀土（RE）元素的RE-Si-（Al）-ON氮氧化物玻璃之间观察到的性质的相似性已被强调和讨论，尽管迄今仍是明显的。忽略了RE离子主要控制氮氧化物玻璃许多增强的物理性能的作用。

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