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Teplofizika vysokikh temperatur, 2001, Volume 39, Issue 6, Pages 904–909
(Mi tvt1995)
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This article is cited in 2 scientific papers (total in 2 papers)
Thermophysical Properties of Materials
Internally consistent thermodynamic description of three-component liquid–metal
systems at high temperatures in the entire region of concentration triangle
D. N. Kagan, G. A. Krechetova, É. É. Shpil'rain Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow
Abstract:
A method is suggested for the investigation of the thermodynamic properties of ternary liquid–metal alloys at high temperatures in the entire region of concentration triangle. The method is demonstrated for a $\mathrm{Na}$–$\mathrm{K}$–$\mathrm{Cs}$ ternary system. Data are obtained for the enthalpy and Gibbs energy of formation of alloy in the temperature range of $200\le T\le1200$ K and concentration range of $0\le x_{i(j,k)}\le1$. The results reveal a very fine effect associated with the temperature rise, namely, the inversion of excess partial Gibbs energy $\Delta\bar{G}_i^*=RT\ln\gamma_i$ ($\gamma_i$ is the activity coefficient of the liquid component) and the change of sign of deviation of partial pressure, as well as of total pressure, from the respective values in accordance with Raoult's law. The obtained results may be used to interpret the available literature data on independent measurements of the saturation pressure.
Received: 14.05.2001
Citation:
D. N. Kagan, G. A. Krechetova, É. É. Shpil'rain, “Internally consistent thermodynamic description of three-component liquid–metal
systems at high temperatures in the entire region of concentration triangle”, TVT, 39:6 (2001), 904–909; High Temperature, 39:6 (2001), 840–845
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https://www.mathnet.ru/eng/tvt1995 https://www.mathnet.ru/eng/tvt/v39/i6/p904
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