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Article – Journal of Advanced Physical Sciences

Journal of Advanced Physical Sciences, Volume 1,Issue 1,2017 Pages 7-9


Structural and Thermal Properties of B2O3-Bi2O3-CaO Glasses
R. Amaravel, G. Venkatesh, L. Balu*, R. Ezhil Pavai


This work is licensed under a Creative Commons Attribution 4.0 International License

Glasses with compositions: 60B2O3-(40-x) Bi2O3-xCaO (where x= 0, 5, 10, 15 and 20 mol%) have been prepared using melt quench technique. The density and molar volume have been determined. It is found that the density and molar volume decrease with increasing CaO content. The effect of Bi2O3 and CaO content on thermal stability, structure of the glass is systematically investigated by X-ray diffraction, SEM, infrared spectroscopy and DTA techniques. The glass transition temperature (Tg) of the samples was found to decrease with increase CaO content. IR measurements revealed an existence of trigonal BO3 pyramid, tetrahedral BO4 and BiO6 octahedral structural units in the network of the investigated glass, Further, it confirm the conversation of four fold borate BO4 to BO3 groups, content which means that Bi2O3 and CaO plays the role of network modifier in the structural network.



Keywords: Bismuth Borate Glass; Molar Volume; Spectral Characterization;

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