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Thermophysical Properties of High-entropy Carbide (HfTaTiNbZr)C at Temperatures of 2500–5500 K

  • THERMOPHYSICAL PROPERTIES OF MATERIALS
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High Temperature Aims and scope

Abstract

Experimental thermophysical data for high-entropy carbide (HfTaTiNbZr)C are presented for the first time at high temperatures (2500–5500 K). A fast (10 μs) method of heating by a current pulse was used. Samples in the form of flat plates with a thickness of ∼100 μm were clamped between glass plates to fix the sample and prevent the occurrence of a shunt discharge. Solidus and liquidus temperatures and properties of carbide were measured—melting heat, input energy (enthalpy) and specific heat—depending on temperature. The temperature was measured using a high-speed pyrometer at a wavelength of 856 nm.

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ACKNOWLEDGMENTS

The authors of JIHT are grateful to the RSF grant no. 19-79-30086 in terms of measuring thermophysical properties, and the authors of NUST “MISIS” are grateful to the RSF grant no. 18-79-10215 in terms of synthesis and sintering of high-entropy compounds—for financial support of this study.

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Authors and Affiliations

  1. Joint Institute for High Temperatures RAS, Moscow, Russia

    A. I. Savvatimskiy & S. V. Onufriev

  2. Moscow Institute for Steel and Alloys, Moscow, Russia

    A. S. Sedegov, S. N. Yudin & D. O. Moskovskikh

Authors
  1. A. I. Savvatimskiy
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  2. S. V. Onufriev
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  3. A. S. Sedegov
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  4. S. N. Yudin
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  5. D. O. Moskovskikh
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Correspondence to A. I. Savvatimskiy.

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Savvatimskiy, A.I., Onufriev, S.V., Sedegov, A.S. et al. Thermophysical Properties of High-entropy Carbide (HfTaTiNbZr)C at Temperatures of 2500–5500 K. High Temp 60, 612–615 (2022). https://doi.org/10.1134/S0018151X2205011X

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  • DOI: https://doi.org/10.1134/S0018151X2205011X

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