Thermodynamic properties of alloys of the binary Sb–Yb system
- Autores: Sudavtsova V.1, Shevchenko M.1, Ivanov M.1, Berezutskii V.1, Kudin V.1, Pastushenko K.1
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Afiliações:
- National Academy of Sciences of Ukraine
- Edição: Volume 91, Nº 7 (2017)
- Páginas: 1174-1182
- Seção: Chemical Thermodynamics and Thermochemistry
- URL: https://journals.rcsi.science/0036-0244/article/view/169579
- DOI: https://doi.org/10.1134/S0036024417070287
- ID: 169579
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Resumo
Mixing enthalpies of melts of the binary Sb–Yb system have been determined for the first time in the ranges 0 < xYb < 0.155 at 960–1030 K and 0.89 < xYb < 1 at 1140 K. It has been found that the melts form with great exothermic effects, and the partial enthalpies of the components at infinite dilution are: \(\Delta \bar H_{Sb}^\infty \) =–260, \(\Delta \bar H_{Sb}^\infty \) =–205 kJ/mol. An ideal associated solution model has been selected to describe the temperature and concentration dependences of thermodynamic properties of the melts, and the parameters of the model have been optimized through self-consistent analysis of the available data on the phase diagram. The model description allows to calculate the Gibbs energies and entropies of mixing of the melts, the activities of the components and the molar fractions of the associates, and the enthalpies and entropies of formation of the solid phases.
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Sobre autores
V. Sudavtsova
National Academy of Sciences of Ukraine
Autor responsável pela correspondência
Email: sud@ipms.kiev.ua
Ucrânia, Kiev
M. Shevchenko
National Academy of Sciences of Ukraine
Email: sud@ipms.kiev.ua
Ucrânia, Kiev
M. Ivanov
National Academy of Sciences of Ukraine
Email: sud@ipms.kiev.ua
Ucrânia, Kiev
V. Berezutskii
National Academy of Sciences of Ukraine
Email: sud@ipms.kiev.ua
Ucrânia, Kiev
V. Kudin
National Academy of Sciences of Ukraine
Email: sud@ipms.kiev.ua
Ucrânia, Kiev
K. Pastushenko
National Academy of Sciences of Ukraine
Email: sud@ipms.kiev.ua
Ucrânia, Kiev