Al2O3和B2O3对铝硼硅酸盐玻璃结构和热学性能的影响
Effect of Al2O3 and B2O3 on the Structure and Thermal Properties of Aluminum Borosilicate Glasses
青礼平 1韦奔 2肖子凡 1平文亮 1陈峰 1钱奇2
作者信息
- 1. 清远南玻节能新材料有限公司 清远 511650
- 2. 华南理工大学材料科学与工程学院 广州 510640
- 折叠
摘要
采用高温熔融法制备了SiO2-Al203-B2O3体系玻璃.通过改变玻璃组成中Al2O3∶B203比,研究了玻璃结构对玻璃热学性能的影响.通过核磁共振谱对玻璃样品结构进行了研究.结果显示,在该铝硼硅玻璃体系中,随玻璃中Al2O3∶B2O3比的增加,玻璃的热膨胀系数降低,玻璃转变温度和玻璃软化温度增高,此性能变化联系到玻璃微观结构.随玻璃中Al2O3∶B2O3比的增加,结构中的游离氧会优先与Al3+结合形成更多的[AlO4]进入玻璃网络,同时形成少量[AlO5]和[AlO6]结构,剩余较少的游离氧才会与B3+结合成[BO4]和[BO3]结构,这些结构变化影响了玻璃的热学性能.
Abstract
The SiO2-Al2O3-B2O3 system glass was prepared by high-temperature melting method.The effect of glass structure on the thermal properties of glass was studied by changing the Al2O3∶B2O3 ratio in glass composition.The structure of glass samples was studied through nuclear magnetic resonance spectroscopy.The results show that in the aluminum borosilicate glass system,as the Al2O3∶B2O3 ratio in the glass increases,the thermal expansion coefficient of the glass decreases,and the glass transition temperature and glass softening temperature increase.This performance change is related to the microstructure of the glass.As the Al2O3∶B2O3 ratio in the glass increases,the free oxygen in the structure will preferentially combine with Al3+to form more[AlO4]entering the glass network,while forming a small amount of[AlO5]and[AlO6]structures.The remaining less free oxygen will combine with B3+to form[BO4]and[BO3]structures,which affect the thermal properties of the glass.
关键词
铝硼硅酸盐玻璃/玻璃结构/热学性能Key words
aluminum borosilicate glass/glass structure/thermal properties引用本文复制引用
出版年
2024
NETL
NSTL
万方数据