Heat Capacity and Thermodynamic Functions of Ni₃₆Nb₂₄Zr₄₀ Glassy Alloy

Abstract

The heat capacity of a Ni₃₆Nb₂₄Zr₄₀ glassy alloy was measured by adiabatic calorimetry from 13 to 300 K. The smoothed values of molar heat capacity were calculated from the data using a least-squares method. The standard enthalpy, entropy, and Gibbs energy were calculated from the smoothed heat capacity values. Assuming H(0)=0 and S(0)=0 at 0 K, the heat capacity, enthalpy, entropy, and Gibbs energy at 298.15 K are 24.91 J·K⁻¹·mol⁻¹, 5.252 kJ·mol⁻¹, 36.45 J·K⁻¹·mol⁻¹, and −5.615 kJ·mol⁻¹, respectively.