Abstract
The crystallization behavior and transparent property of MgO-Al2O3-SiO2 (MAS) glasses with TiO2 and TiO2+ZrO2 as nucleating agents were discussed by differential thermal analysis, X-ray diffraction, field emission-environment scanning electron microscope, energy dispersive spectrum and UV-VIS-NIR scanning spectrophotometer. It was found that the glass crystallized at 950 °C with ZrO2 less than 3% could obtain transparent glass ceramic, which presented purple to colorless. With the nucleating agent additives (5% TiO2+3% ZrO2), the colorless transparent glass-ceramics with spinel as the main crystal phase could be prepared, and the transmittance reached about 80%. As the crystallized temperature increase to 1 000 °C, besides spinel(MgAl2O4), sapphirine (Mg3.5Al9Si1.5O20) and ZrTiO4 precipitated from matrix glass, and the transmitance of glass-ceramic decreased.
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Funded by the National Natural Science Foundation of China (No.50472309)
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Wang, J., Cheng, J., Tang, L. et al. Effect of nucleating agents and heat treatments on the crystallization of magnesium aluminosilicate transparent glass-ceramics. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 28, 69–72 (2013). https://doi.org/10.1007/s11595-013-0642-4
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DOI: https://doi.org/10.1007/s11595-013-0642-4