Open AccessThermophysical behavior of mercury-lead liquid alloy
Author(s) -
N. Panthi,
I. B. Bhandari,
I. Koirala
Publication year - 2022
Publication title -
papers in physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.149
H-Index - 10
ISSN - 1852-4249
DOI - 10.4279/pip.140005
Subject(s) - thermodynamics , surface tension , alloy , gibbs free energy , enthalpy , long wavelength limit , enthalpy of mixing , viscosity , entropy of mixing , chemistry , materials science , physics , metallurgy , condensed matter physics
Thermophysical properties of compound forming binary liquid mercury-lead alloy at temperature 600 K have been reported as a function of concentration by considering HgPb2 complex using different modelling equations. The thermodynamic properties such as the Gibbs free energy, enthalpy of mixing, chemical activity of each component, and microscopic properties such as concentration fluctuation in long-wavelength limit and Warren-Cowley short range order parameter of the alloy are studied by quasi-chemical approximation. This research paper places additional emphasis on the interaction energy parameters between the atoms of the alloy. The theoretical and experimental data are compared to determine the model’s validity. Compound formation model, statistical mechanical technique, and improved derivation of the Butler equation have all been used to investigate surface tension. The alloy’s viscosity is investigated using the Kozlov-Ronanov-Petrov equation, the Kaptay equation, and the Budai-Benko-Kaptay model. The study depicts a weak interaction of the alloy, and the theoretical thermodynamic data derived at 600 K are in good agreement with the experimental results. The surface tension is slightly different in the compound formation model than in the statistical mechanical approach and the Butler equation at greater bulk concentrations of lead. The estimated viscosities in each of the three models are substantially identical.