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Thermodynamical miscibility in 0.8[xB2O3-(1 − x)P2O5]-0.2K2O glasses |
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| Authors: | A.P. Ahoussou J. Rogez A. Kone |
| Affiliation: | a Laboratoire de Chimie-Physique, UFR-SSMT, Université de Cocody, 22 BP 582 Abidjan 22, Côte d’Ivoire b Laboratoire TECSEN-UMR 6122-CNRS, Université Paul Cézanne, 13397 Marseille, cedex 20, France |
| Abstract: | The thermodynamical miscibility in 0.8[xB2O3-(1 − x)P2O5]-0.2K2O glasses has been studied by measuring the glass transition temperature and the mixing enthalpy. Measurements have been performed by differential scanning calorimeter and hydrofluoric acid solution calorimetry at 298 K. The enthalpies of mixing are significantly negative over the whole range of composition. The results are discussed in terms of intermolecular associations. |
| Keywords: | Oxide glasses Borates Phosphate Calorimetry Glass transition Thermodynamics |
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