Zhaoxia Hou, Yongming Zhang, Huashan Zhang, Hongbo Zhang, Jing Shao,  and Chunhui Su, Study on crystallization and microstructure of Li2O-Al2O3-SiO2 glass ceramics, J. Univ. Sci. Technol. Beijing, 13(2006), No. 6, pp. 564-569. https://doi.org/10.1016/S1005-8850(06)60114-X
Cite this article as:
Zhaoxia Hou, Yongming Zhang, Huashan Zhang, Hongbo Zhang, Jing Shao,  and Chunhui Su, Study on crystallization and microstructure of Li2O-Al2O3-SiO2 glass ceramics, J. Univ. Sci. Technol. Beijing, 13(2006), No. 6, pp. 564-569. https://doi.org/10.1016/S1005-8850(06)60114-X
Materials

Study on crystallization and microstructure of Li2O-Al2O3-SiO2 glass ceramics

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  • Corresponding author:

    Chunhui Su    E-mail: sch@cust.edu.cn

  • Received: 8 February 2006
  • Lithium aluminosilicate (LAS) glasses are generally difficult to prepare because of their high melting temperature. In this study, the preparation of LAS glasses was achieved at a relatively low melting temperature. The batch containing MgO-ZnO-Li2O-Al2O3-SiO2 was melted in a platinum crucible at 1550°C for 2 h and was then followed by two- or three-step heat treatment processes for nucleation and crystal growth. The characterizations were carried out by differential thermal analysis, X-ray diffraction, infrared spectroscopy, scanning electron microscopy, and UV-Vis-NIR scanning spectrophotometry. The hexagonal stuffed β-eucryptite solidsolution crystallized at 840-960°C. Most of the hexagonal β-eucryptite solid solution transformed into the tetragonal β-spodumene solid solution at 1100°C. Almost all the aluminum atoms entered into the tetrahedral sites in the aluminosilicate network of the β-eucryptite/β-quartz solid solution. All of the Al atoms did not belong to the aluminosilicate network of the β-spodumene solid solution.The glass ceramic with a mean grain size of 10-20 nm is transparent, the transmittance reaches ~85% in the visible light wavelength.
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