Thermodynamic Studies on Sr5Nb4O15

Year 2023, Volume: 26 Issue: 1, 18 - 24, 14.03.2023

P. Samui , Santosh Bhojane , Brıj Sıngh , Swarup Rakshit

https://doi.org/10.5541/ijot.1157497

Abstract

The SrO–Nb2O5 system, especially Sr5Nb4O15 compound is of interest for their use as an electroceramics. In this work, Sr5Nb4O15 compound was synthesized by solid-state reaction and characterised by XRD. Thermodynamic properties like heat capacity, enthalpy of formation and Gibbs energy of formation of Sr5Nb4O15 have been measured. The standard molar enthalpy of formation of Sr5Nb4O15(s) was determined using an oxide melt solution high temperature calorimeter. Based on these experimental data, a self-consistent thermodynamic function of this compound was also generated. This thermodynamic data is essential for the optimization of synthesis conditions for materials and for the evaluation of their stability under appropriate technological operating conditions.

Keywords

Heat Capacity, High temperature calorimeter, Enthalpy of formation

Thanks

Authors are grateful to Head, PDD for encouraging to carry out the work.

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