|Publication No: 91||Search all ORC publications|
Fusion temperatures of SiO2-P2O5 binary glasses
Experimental measurements of fusion temperatures against glass composition for binary phosphosilicate glasses, as used in optical fibres, were made. The glasses were prepared in layers within a silica tube by chemical vapour deposition. Using a model based on the fraction of P-O to Si-O bonds and the known viscosity of vitreous silica and glassy P2O5, theoretical calculations of fusion temperatures were made and compared with experiment. Good agreement was obtained. The model was also applied to the fusion temperatures of binary SiO2-GeO2 and SiO2-B2O3 glasses, and agreement with qualitative experimental measurement was found. Viscosity-temperature data for glasses in these three systems may also be calculated from the same model.
Physics and Chemistry of Glasses (1978) Vol.19(3) pp.41-42
Copyright University of Southampton 2006