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Investigation of Crystallization and Microstructure of Na<sub>2</sub>O-CaO-P<sub>2</sub>O<sub>5</sub>-SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> Bio Glass Ceramic System
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New Journal of Glass and Ceramics·Volume 02 (2012)·Pages 1–6·Published 12 January 2012·DOI10.4236/njgc.2012.21001
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Abstract
The effects of Al 2 O 3 on the crystallization behavior of glass compositions in the Na 2 O-CaO-P 2 O 5 -SiO 2 system were investigated by differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). In this system, thermal parameters of glasses 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 Al2O3 had desirable sintering behavior and reached to an acceptable density. Phase investigation and micro structural study were performed by XRD and SEM, respectively.
KeywordsBio Glass-CeramicAluminaCrystallizationMechanical Behavior
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