Effects of MgO/SiO2 Ratio on Crystallization Properties of MgSiO3 and Mg2SiO4 Nanocrystals in Aluminosilicate Glasses
Kangkang Geng , Yunlan Guo , Chao Liu
Journal of Wuhan University of Technology Materials Science Edition ›› 2025, Vol. 40 ›› Issue (4) : 975 -983.
Effects of MgO/SiO2 Ratio on Crystallization Properties of MgSiO3 and Mg2SiO4 Nanocrystals in Aluminosilicate Glasses
Transparent glass-ceramics containing MgSiO3 and/or Mg2SiO4 nanocrystals were prepared. Effects of MgO/SiO2 ratio on crystallization properties of MgSiO3 and Mg2SiO4 nanocrystals were investigated. When the MgO/SiO2 ratio is relatively low, crystallization of MgSiO3 is favored, whereas a higher MgO/SiO2 ratio tends to promote the crystallization of Mg2SiO4. Glass-ceramics are transparent in the visible range due to the small size of the precipitated nanocrystals. Replacing SiO2 with MgO results in an increase in Vickers hardness, and the Vickers hardness can be further enhanced through the precipitation of MgSiO3 and Mg2SiO4 nanocrystals. The findings presented herein are meaningful for the preparation of highly transparent glass-ceramics containing MgSiO3 and Mg2SiO4 nanocrystals.
glass-ceramic / MgSiO3 / Mg2SiO4 / glass structure / vickers hardness
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Wuhan University of Technology and Springer-Verlag GmbH Germany, Part of Springer Nature
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