Glass transition temperature and devitrification behaviour of glasses in the Na2O*2SiO2-BaO*2SiO2 composition range", J.Mater.Sci.Letters 3,

Abstract

DTA and DDTA measurements have been used. For more than 70 mol% Sodium disilicate surface crystallization alone occurs; at the eutectic at 70mol%, crystallization proved very difficult; and below 70mol%, bulk and surface crystallization occurred. Nucleation rates have been determine