STRONTIUM CALCIUM ALUMINATE GLASSES

Glasses containing (mol%) 0-17SrO, 45-70 Ca0 and 30-40 Al2O3 were prod uced by conventional melting techniques The addition of SrO markedly i mproves the glass forming tendency up to the limits of glass formation . The density and refractive index increase and the glass transformati on temperature decreases as SrO replaces CaO. The infrared transmissio n is not significantly influenced by substituting strontium for calciu m even at the limits of glass formation. No insight into the ease of g lass formation was gained by examination of T-x-T-g values. Tends obse rved in the physical data are consistent with the current understandin g of the structure of other aluminate glasses.