Correlation between glass transition effect and structural changes in multicomponent iron phosphate-silicate glasses
TL;DR: In this paper, a thermal and spectroscopic study of P2O5-SiO2-K2O-MgO-CaO-Fe2O3 system was conducted to gain information about their structure and thermal behavior in the range of glass transition effect.
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Abstract: Iron phosphate-silicate glasses from P2O5–SiO2–K2O–MgO–CaO–Fe2O3 system were subjected to the thermal and spectroscopic studies in order to gain information about their structure and thermal behavior in the range of glass transition effect. Research includes results obtained via DSC, MIR and DRIFT spectroscopy. Designated values of glass transition temperature and specific heat change slightly increases with Fe2O3 incorporation. Spectra collected during thermal treatment of glasses containing 2 and 30 mol% Fe2O3 exhibited various changes. Fe2O3 addition affected the glass structure by its reinforcement and led to its preservation during thermal treatment. The connection between density, molar volume, oxygen packing density and the chemical composition’s alteration were also established because of the direct dependence of physical properties and the structure. Obtained results supported thermal and spectroscopic studies. Conducted research is considered as a contribution to the knowledge about the family of iron phosphate glasses, which are known from their interesting properties and widely used applications.
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Citations
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An Insight into the Correlation between Chemical Composition Changes of Aluminum-Iron-Polyphosphate Glasses and Thermal Properties.
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References
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TL;DR: In this paper, spectroscopic and diffraction studies of simple phosphate glasses, including v-P2O5 and binary phosphate compositions, are described and special attention is given to the structures of anhydrous ultraphosphate glasses, which have received close attention from the glass community only in the past six years.
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TL;DR: In this article, the basic principles of incorporating high level radioactive waste into glasses, ceramics and glass composites, including glass-ceramics, are described, and the importance of processing property-structure relations in such systems over size scales from the atomic to the geological and on timescales to hundreds of thousands of years is highlighted.
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