The Properties of Some Soda-Lead Oxide-Silica Glasses

JSGT_1927_V11_T300_T303

Many gaps in our published knowledge of the physical properties of lead oxide-containing glasses have been filled during the past ten years. For much of the systematic study of these glasses we are indebted to C. J. Peddle, who has very thoroughly investigated the relationship between the chemical composition and the density, refractive index and dispersion, and the durability when lead oxide is present in company with varying proportions of either or both soda and potash. The more systematic values recorded in this paper are for glasses of the general type 6SiO₂.(2−x)Na₂O.xRO or R₂O₃or RO₂, which we have steadily been investigating for several years. The properties measured are those of annealing temperature density, and thermal expansion; the durability results having already been recorded.

S. English, W. E. S. Turner & F. Winks