The Chemical Structure And Physical Properties Of Alkali Borate Glasses

It is well known that. for a number o1 solutions, the enthalpy of mixing is considerably larger than the kinetic energy of the constituent atoms. In addition, the entropy of mixing differs noticeably from that of an ideal solution and, as a result. the commonly used models of an ideal, athennal or regular solution ar~ inapplicable. Many such systems, however, are adequately descibed by the model of associated solutions, as in the case of the oxide glasses and melts considered in this paper.