Thermodynamic Properties and Equation of State for Tungsten

A high-temperature equation of state for tungsten was constructed in this study using experimental data on its thermodynamic properties, thermal expansion, compressibility, and bulk compression modulus. The totality of experimental data were optimized by the temperature-dependent Tait equation over...

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Main Authors: Nikolay V. Kozyrev, Vladimir V. Gordeev
Format: Article
Language:English
Published: MDPI AG 2023-10-01
Series:Crystals
Subjects:
Online Access:https://www.mdpi.com/2073-4352/13/10/1470
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author Nikolay V. Kozyrev
Vladimir V. Gordeev
author_facet Nikolay V. Kozyrev
Vladimir V. Gordeev
author_sort Nikolay V. Kozyrev
collection DOAJ
description A high-temperature equation of state for tungsten was constructed in this study using experimental data on its thermodynamic properties, thermal expansion, compressibility, and bulk compression modulus. The totality of experimental data were optimized by the temperature-dependent Tait equation over a pressure range from 0 up to 1000 kbar and over a temperature range from 20 K to the melting point. An extended Einstein model was used to describe the temperature dependence of thermodynamic and thermophysical parameters. A linear temperature dependence was embraced for the derivative of the isothermal bulk modulus. The resultant equation of state provides a good fit to the whole set of experimental data within measurement uncertainties associated with individual quantities.
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spelling doaj.art-afcf4a00ce084d469de11cc5f8ec69bb2023-11-19T16:09:41ZengMDPI AGCrystals2073-43522023-10-011310147010.3390/cryst13101470Thermodynamic Properties and Equation of State for TungstenNikolay V. Kozyrev0Vladimir V. Gordeev1Laboratory for Physicochemical Fundamentals of Energetic Condensed Systems, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), Biysk 659322, RussiaLaboratory for Physicochemical Fundamentals of Energetic Condensed Systems, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), Biysk 659322, RussiaA high-temperature equation of state for tungsten was constructed in this study using experimental data on its thermodynamic properties, thermal expansion, compressibility, and bulk compression modulus. The totality of experimental data were optimized by the temperature-dependent Tait equation over a pressure range from 0 up to 1000 kbar and over a temperature range from 20 K to the melting point. An extended Einstein model was used to describe the temperature dependence of thermodynamic and thermophysical parameters. A linear temperature dependence was embraced for the derivative of the isothermal bulk modulus. The resultant equation of state provides a good fit to the whole set of experimental data within measurement uncertainties associated with individual quantities.https://www.mdpi.com/2073-4352/13/10/1470Tait equation of statetungstenbehavior modeling
spellingShingle Nikolay V. Kozyrev
Vladimir V. Gordeev
Thermodynamic Properties and Equation of State for Tungsten
Crystals
Tait equation of state
tungsten
behavior modeling
title Thermodynamic Properties and Equation of State for Tungsten
title_full Thermodynamic Properties and Equation of State for Tungsten
title_fullStr Thermodynamic Properties and Equation of State for Tungsten
title_full_unstemmed Thermodynamic Properties and Equation of State for Tungsten
title_short Thermodynamic Properties and Equation of State for Tungsten
title_sort thermodynamic properties and equation of state for tungsten
topic Tait equation of state
tungsten
behavior modeling
url https://www.mdpi.com/2073-4352/13/10/1470
work_keys_str_mv AT nikolayvkozyrev thermodynamicpropertiesandequationofstatefortungsten
AT vladimirvgordeev thermodynamicpropertiesandequationofstatefortungsten