Abstract
Microheterogeneity of glass and its behavior after heat treatment have been investigated by small angle X-ray scattering (SAXS) on the glasses of Li2O–SiO2 system.
For Li2O·4SiO2 glass, the SAXS curve exhibits a little hump. It disappears on prolonged heating. For Li2O·3SiO2 glass and Li2O·2SiO2 glass, the SAXS curves decline monotonously with the increasing scattering angle. It is concluded that the glasses studied, irrespective of their compositions, have microheterogeneities of about 20Å in spherical diameter, and that these values increase with the increasing time of heating.
