The non-isothermal devitrification of Na2O · 2 SiO2 glass prepared by gel-glass transformation is investigated by differential thermal analysis. The glass transition temperature, Tg, and the activation energy, E, for the crystal growth are evaluated from DTA and DDTA curves. The results are compared with those obtained for Na2O · 2 SiO2 prepared by fusion of oxides. The influence of the specific surface area of the samples on devitrification kinetics is also discussed.
Non-isothermal devitrification kinetics of Na2O*2SiO2 gel glass / A., Grassi; Branda, Francesco; Saiello, Silvana; A., Buri; A., Marotta. - In: THERMOCHIMICA ACTA. - ISSN 0040-6031. - ELETTRONICO. - 76:(1984), pp. 133-138.
Non-isothermal devitrification kinetics of Na2O*2SiO2 gel glass
BRANDA, FRANCESCO;SAIELLO, SILVANA;
1984
Abstract
The non-isothermal devitrification of Na2O · 2 SiO2 glass prepared by gel-glass transformation is investigated by differential thermal analysis. The glass transition temperature, Tg, and the activation energy, E, for the crystal growth are evaluated from DTA and DDTA curves. The results are compared with those obtained for Na2O · 2 SiO2 prepared by fusion of oxides. The influence of the specific surface area of the samples on devitrification kinetics is also discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
