Thermal Study of Rubidium and Cesium Borosilicate Glass

Resumo

The thermal properties of a series of synthesized rubidium and cesium borosilicate glasses were studied by means of differential scanning calorimetry. The vitrification and crystallization temperatures and the change in the specific heat capacity of these glasses at the vitrification temperature were determined. The thermal data were compared with the results of an investigation of the structural particularities by means of IR spectroscopy. The information obtained made it possible to adjust the heat-treatment parameters for glass-containing materials as a function of their composition; this is important in order to improve glassy matrix materials for the immobilization of radwastes.