Non-isothermal studies on crystallization kinetics of tellurite 20Li2O-80TeO2 glass.

Structural and thermal properties of the 20Li2O-80TeO2 glass were studied using X-ray diffraction analysis and differential scanning calorimetry techniques to understand and control the crystallization process on this glass. The γ-TeO2, α-TeO2 and α-Li2Te2O5 phases were identified during the crystallization in this glass. Activation energies and Avrami exponent n were calculated from non-isothermal measurements for glasses with different particle size. The mean values $$ \bar n $$ of Avrami exponent were obtained for glasses with 63–75 and 45–63 μm particle sizes such as $$ \bar n_1 < \bar n_2 < \bar n_3 $$, but glasses with particle size 38–45 μm and smaller than 38 g,m presented $$ \bar n_1 \approx \bar n_2 < \bar n_3 $$. [ABSTRACT FROM AUTHOR]