Influence of low magnesia content on the CaO-Al2O3-SiO2 glass-ceramics: Its crystallization behaviour, microstructure and physical properties

This study illuminates the role of low amounts of magnesia (≤ 3 wt%) on the crystallization behaviour of CaO-Al2O3-SiO2 glass-ceramics. Differential thermal analysis demonstrates that the peak temperature and activation energy for crystallization decrease with the addition of MgO. The crystallization pattern changes from one-dimensional crystallization to two-dimensional growth, as indicated by higher values of the Avrami parameter (n) with...