NON-ISOTHERMAL CRYSTALLIZATION OF K2O center dot TiO2 center dot 3GeO(2) GLASS

作者：Zivanovic V D; Grujic S R^*; Tosic M B; Blagojevic N S; Nikolic J D

来源：Journal of Thermal Analysis and Calorimetry, 2009, 96(2): 427-432.

DOI：10.1007/s10973-008-9335-1

• crystallization
• glass
• kinetics
• K2TiGe3O9

The crystallization of K2O center dot TiO2 center dot 3GeO(2) glass under non-isothermal condition was studied. In powdered glass with particle sizes less than 0.15 mm, surface crystallization was dominant and an activation energy of crystal growth of E-a,E-s = 327 /- 50 kJ mol(-1) was calculated. In the size range 0.15 to 0.45 mm, both surface and volume crystallization occurred. For particle sizes >0.45 mm, volume crystallization dominated with spherulitic morphology of the crystals growth and E-a,E-v = 359 /- 64 kJ mol(-1) was calculated.

• 出版日期2009-5