The Experimental Investigation of Kinetics of Glass Transition of ZBLAN Glass by using Differential Scanning Calorimetry

Indian Journal of Pure & Applied Physics

article

Margi K. Patel¹  Acharya Naveen K.²  Arun Pratap¹ 

[1] Condensed matter physics laboratory, Applied Physics Department, Faculty of Tech. & Engg., The M. S. University of Vadodara-390 001;Polymer Membrane Research laboratory, Applied Physics Department, Faculty of Tech. & Engg., The M. S. University of Vadodara-390 001

关键词: Kinetics of Glass transition;    ZBLAN glass;    Activation energy;    Fragility index;    Article;   

DOI  :  10.56042/ijpap.v61i1.68594

来源: National Institute of Science Communication and Information Resources

【 摘 要 】

A ZBLAN glass is a heavy metal fluoride (HMF) glass that possesses high thermal stability and excellent property as a transmitting material. The current study examines the thermal properties of ZBLAN glass utilizing Differential scanning calorimetry (DSC) at various heating rates. The temperature of glass transition, Tg, is observed to vary with heating rate, indicating its kinetic nature. Through the use of Kissinger's and Augis- Bennett's methodologies and the heating rate dependency of Tg, the activation energy (E) has been determined. These methodologies have also been used to obtain the fragility index (m), which can be used to evaluate the glass forming ability (GFA) of the system. The fragility index found is greater than 16, indicating that the ZBLAN glass is "fragile.".

【 授权许可】

Unknown