Effects of Al/Si and B/Na mole ratios on structure and durability of Na2O-CaO-Al2O3-SiO2 glasses

被引：0
作者：
Xiao, Zifan [1 ]
Cheng, Jinshu [1 ]
Yang, Kun [1 ]
Wu, Hao [1 ]
机构：
[1] State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2014年 / 42卷 / 01期
关键词：
Chemical durability; Raman spectroscopy; Sodium-calsium-aluminium-silicate system glass; Structure;
D O I：
10.7521/j.issn.0454-5648.2014.01.21
中图分类号：
学科分类号：
摘要：
Two series of Na2O-CaO-Al2O3-SiO2 system glasses with different Al/Si and B/Na mole mole ratios were prepared by a melting-quenching method. The structures of the glasses were characterized by an INVIA confocal microRaman spectrometer based on the tetrahedra structural unit Qn (n= 1, 2, 3, 4), NBO/NBO+BO and NBO/tetrahedron. The glass durability was determined by inductively coupled plasma-atomic emission spectroscopy (ICP-AES), optical microscopy and scanning electron microscopy, respectively. The mass losses of glasses in deionized water and alkaline solution were measured. The results show that the Qn unit distributions in two series of the glasses are different, and the NBO/NBO+BO and NBO/tetrahedron both decrease with increasing the Al/Si and B/Na mole ratios. The reduction of NBO content can enhance the leaching resistance of sodium ions and decrease the network dissolution. The effect of sodium content on the glass durability is dominant rather than the effect of the network formation.
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页码：120 / 126
页数：6
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