Abstract

The Raman spectra of borosilicate glass containing 35, 40, and 45 mol % of alkali-earth metal oxide (SrO and BaO) are studied. The structural changes taking place at a gradual substitution of boron oxide by silica are determined. At a high boron oxide content, transformations among borate structural units are predominant because the main part of the modifying oxide reacts with the borate network. When boron is replaced by silicon, the appearance of borosilicate ring structures is observed in alkali-earth borosilicate glass. At the ratio of SiO₂/B₂O₃ > 0.5, a part of the triborate groups and borate structural units containing nonbridging oxygen atoms decreases gradually. When SiO₂/B₂O₃ > 1, the character of the transformations among the Q ⁿ structural units changes.

中文翻译：

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碱土金属硼硅酸盐玻璃的拉曼光谱研究

摘要

研究了含有35、40和45 mol％碱土金属氧化物（SrO和BaO）的硼硅酸盐玻璃的拉曼光谱。确定在逐渐用二氧化硅取代氧化硼时发生的结构变化。在高的氧化硼含量下，硼酸盐结构单元之间的转变是主要的，因为改性氧化物的主要部分与硼酸盐网络反应。当硼被硅替代时，在碱土金属硼硅酸盐玻璃中观察到硼硅酸盐环结构的出现。SiO ₂ / B ₂ O _3的比＞ 0.5时，一部分三硼酸酯基和含有非桥连性氧原子的硼酸酯结构单元逐渐减少。当SiO ₂ / B ₂ O _3时> 1时，Q  ^n个结构单元之间的转换特征发生变化。