PHYSICAL PROPERTIES OF SODIUM CADMIUM PHOSPHATE GLASSES

Abstract

A series of sodium cadmium phosphate glasses was prepared in a platinum crucible by melt quench technique. These glasses contain a mole% composition of x% Na 2 O -(50-x)% CdO -50% P 2 O 5, where the quantity x lies in 0–40 mole%. In this work the physical properties of these glasses were studied, which are reported as mass density ρ, oxygen packing density, molar volume, sodium ion concentration, modulus of rigidity η, coefficient of linear expansion α, transition temperature Tg, and softening temperature Ts. The mass density, oxygen packing density, modulus rigidity, transition temperature and softening temperature show decreasing trend with increasing concentration of sodium ions in these glasses, whereas molar volume and coefficient of linear expansion indicate an increase with increasing concentration of sodium oxide.