Thermal expansion of lead silicate glasses

摘要: The thermal expansion, when heated from 77 to 273 K, of two samples lead silicate glass, containing 21 and 28.5 mol % PbO, has been measured. temperature dependence the expansion coefficient, α, is in qualitative agreement with behaviour sodium glass. However, addition ∼ PbO silica required produce an increase magnitude α comparable only 10 Na2O. differences magnitudes for soda glasses are considered right previous proposals their structures.