Structure And Properties Of Selected Zirconia Silicate Glasses

Viscosity, density, thermal expansion, glass transition temperature, refractive index, molar refraction and chemical durability of selected compositional series of Na"O-K2O-ZnO-CaO-ZrO2-SiO2 glasses containing 1 and 3 mol. % ZrO2 were measured and interpreted according to the network-forming / -modifying activities of particular oxides. The influence of ZrO2/SiO2, ZnO/CaO and K2)/Na2) substitution on measured physical and chemical properties was discussed.