Synthesis and characterization of Na2O–CaO–SiO2 glass–ceramic

The Na 2 O–CaO–SiO 2 ternary glass–ceramic with the composition of 49 mass% Na 2 O, 20 mass% CaO, and 31 mass% SiO 2 was prepared by the conventional method. The ternary glass–ceramic was characterized using X-ray diffraction (XRD), differential thermal analysis (DTA), thermogravimetric analysis, Fo...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2014, Vol.117 (1), p.223-227
Main Author: Kaygili, Omer
Format: Article
Language:English
Subjects:
Analytical Chemistry
Chemistry
Chemistry and Materials Science
Inorganic Chemistry
Measurement Science and Instrumentation
Physical Chemistry
Polymer Sciences
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Summary:The Na 2 O–CaO–SiO 2 ternary glass–ceramic with the composition of 49 mass% Na 2 O, 20 mass% CaO, and 31 mass% SiO 2 was prepared by the conventional method. The ternary glass–ceramic was characterized using X-ray diffraction (XRD), differential thermal analysis (DTA), thermogravimetric analysis, Fourier transform infrared spectroscopy, and scanning electron microscopy techniques. The Na 2 CaSiO 4 phase, having the cubic crystal system, with the crystallite size of 25.14 nm and lattice parameter of 0.7506 nm was determined from the XRD pattern. The activation energy of the glass–ceramic calculated from the DTA curves was found to be 162.02 kJ mol −1 . The Avrami exponent was found to be ~2 indicating a one-dimensional growth process. The mass loss percent from ambient temperature to 1,173 K is less than 1 %. The density was calculated to be 2,723 kg m −3 . The fine-grained microstructure with the particle sizes less than 1 μm was confirmed by the scanning electron microscope micrograph.
ISSN:1388-6150
1588-2926
DOI:10.1007/s10973-014-3655-0