Structural and Thermal Characterization of Antimony-Phosphate Glass

Abstract:

A new ternary glass systems of composition xSb₂O₃-(75-x) P₂O₅-25MgO, where x = 30, 40, 50 mol%; has been prepared via melt-quenching method. Synthesized glasses are characterized using XRD, FESEM, EDX, and TG/DTA measurements. The influence of varying Sb₂O₃ concentrations on their thermal properties and crystal structure is evaluated. The XRD patterns confirmed the amorphous nature of samples. SEM images demonstrated interesting phase formation with ribbons-like texture. Three crystalline phases were observed in this glass series which are antimony phosphate, antimony orthophosphate and cervantite. EDX spectra detected the approximate percentage of the raw elemental traces. Thermal analysis of these glasses revealed their high-molecular polymer character for Sb₂O₃ content at 50 mol%. Three different glass transition temperatures are achieved with three different composition each, which are (276, 381, 422 °C) at x=30 mol%, (276, 381, 470 °C) at x=40 mol% and (276, 381, 443 °C) at x=50 mol%. Furthermore, the solidus and liquidus temperature are found to decrease with increasing Sb₂O₃. This observation may open up new research avenues for antimony based ternary glasses.

• Periodical: Solid State Phenomena (Volume 268)
• Pages: 33-37
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.268.33
• Online since: October 2017
• Authors: S.Y. Moustafa, M.R. Sahar*, Sib Krishna Ghoshal
• Keywords: Antimony-Phosphate Glass, Crystalline Phases, Liquidus Temperature, Solidus Temperature, Thermal Properties

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