In the present report, thermal and physical
characterization of 40TeO2–(60 - x)V2O5–xSb2O3 glasses,
prepared by melt quenching method, has been investigated
by differential scanning calorimetry (DSC) and so
discussed in the compositional range 0 B x B 10 mol%.
DSC plots of these ternary glasses have been studied within
the temperature range of 150–500 C at the heating rates
u = 3, 6, 9, 10 and 13 K min-1. In this work, thermal
stability, glass-forming tendency, the temperature corresponding
to the onset of crystallization (Tx), the crystallization
temperature (TCr), the glass transition temperature
(Tg), the activation energy of crystallization by using
Ozawa and Kissinger methods, and the crystallization
activation energy using Avrami index (n) have been measured
and reported, to determine the relationship between
Sb2O3 content and the thermal stability in order to interpret
the structure of glass. In conclusion, from the obtained
data, it was found that characteristic temperatures Tg, Tx
and Tcr are increasing with increasing the antimony oxide
content and also with increasing the heating rate; glass with
x = 10 has the highest thermal stability and glass-forming
tendency and so has very good resistance against thermal
attacks; the sample S5 shows a sharp decrease in the
crystallization activation energy, which can be resulted by
the increase in non-bridging oxygens; the crystallization
activation energy calculated from Kissinger’s model is
more accurate, and the trend of activation energy values is
similar in all of Ozawa, Kissinger and Avrami methods;
also the obtained values of n show that it fluctuates around
n & 1, which can be attributed to surface or one-dimensional
crystal growth of crystals.