| Effect of Al2O3 on Crystallization Behavior and Microstructure of Na2O-CaO-P2O5-SiO2 Glass-ceramic System |
| Bahman Mirhadi, Behzad Mehdikhani1 |
Imam Khomeini International University, Engineering Department
1Standard Research Institute, Ceramic Department |
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| ABSTRACT |
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The effects of $Al_2O_3$ on the crystallization behavior of glass compositions in the $Na_2O$-CaO-$SiO_2$ system were investigated by differential thermal analysis (DTA), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The effect of $Al_2O_3$ content on the mechanical properties, density, phase formation, and microstructures of $Na_2O$-CaO-$P_2O_5$-$SiO_2$ glass ceramics were studied. The thermal parameters of each glass were studied by DTA. The density of the glass ceramic samples was measured by Archimedes' method. It was found that the glass-ceramic containing 2.0 molar percent $Al_2O_3$ had desirable sintering behavior and reached an acceptable density. Phase investigation and micro-structural analysis were performed by XRD and SEM, respectively. |
| Key words:
Bioglass-ceramic, Alumina, Crystallization, Mechanical behavior |
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