Density and Microhardness of Glasses in the SrO-B2O3-SiO2 System

摘要

The density d at a temperature of 25°C is measured by the hydrostatic weighing method, the Vickers microhardness H_V is determined, and the fluctuation free volume fraction f_g is calculated for glasses in the SrO-B2O3-SiO2 system with a constant strontium oxide content in the range from 35 to 45 mol %. It is demonstrated that the quantities H_V and f_g decrease and the density d increases with an increase in the SrO content.