The glass transition and crystallization kinetic studies on BaNaB9O15 glasses

TL;DR

This study investigates the thermal properties and crystallization kinetics of BaNaB9O15 glasses, revealing how sample thickness influences their crystallization behavior and providing insights into their glass transition and Kauzmann temperature.

Contribution

It presents a comprehensive analysis of the glass transition and crystallization kinetics of BNBO glasses, including the effect of sample thickness, using approximation-free methods.

Findings

Kauzmann temperatures for BNBO glasses were 776 K (plates) and 768 K (powder).

Sample thickness affects the crystallization kinetics of BNBO glasses.

The study provides detailed kinetic parameters for BNBO glass crystallization.

Abstract

Transparent glasses of BaNaB9O15 (BNBO) were fabricated via the conventional melt-quenching technique. The amorphous and the glassy nature of the as-quenched samples were respectively, confirmed by X-ray powder diffraction (XRD) and differential scanning calorimetry (DSC). The glass transition and crystallization parameters were evaluated under non-isothermal conditions using DSC. The correlation between the heating rate dependent glass transition and the crystallization temperatures was discussed and deduced the Kauzmann temperature for BNBO glass-plates and powdered samples. The values of the Kauzmann temperature for the plates and powdered samples were 776 K and 768 K, respectively. Approximation-free method was used to evaluate the crystallization kinetic parameters for the BNBO glass samples. The effect of the sample thickness on the crystallization kinetics of BNBO glasses was also investigated.