Chemical Stability Of Zno-Na2O-So3-P2O5 Glasses

This paper reports on chemical stability and corrosion behaviour of highly depolymerised sulfophosphate glasses from the system ZnO-Na2O-SO3-P2O5 in aqueous solution, providing data on weight loss, ion release rates, and modifications of surface topology as a function of time, temperature and pH value. Observations seem consistent with the previously developed structural model of chemical heterogeneity, where cations Na+ and Zn2+ cluster selectively in the vicinity of sulfate and phosphate anions, respectively.