Change in Thermophysical Properties and Melting Temperature of Niobium with Increasing Pressure
- Authors: Kramynin S.P.1, Akhmedov E.N.2
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Affiliations:
- Institute of Physics, Dagestan Science Center, Russian Academy of Sciences
- Institute for Geothermal Research, Dagestan Science Center, Russian Academy of Sciences
- Issue: Vol 120, No 11 (2019)
- Pages: 1027-1032
- Section: Theory of Metals
- URL: https://journals.rcsi.science/0031-918X/article/view/168790
- DOI: https://doi.org/10.1134/S0031918X19110097
- ID: 168790
Cite item
Abstract
Based on the Mie–Lennard-Jones interatomic pair potential and the Einstein crystal model, the thermal equation of state and the pressure dependences of the thermophysical properties of niobium are obtained. The pressure dependences of the Debye temperature, the first, second, and third Grüneisen parameters, isothermal compression modulus, isochoric and isobaric heat capacity, thermal expansion coefficient, and the pressure derivatives of these parameters along the 300 and 3000 K isotherms are studied. The calculations showed good agreement with experimental data. Based on the results obtained, the pressure dependence of the melting point of niobium and its pressure derivative are calculated.
About the authors
S. P. Kramynin
Institute of Physics, Dagestan Science Center, Russian Academy of Sciences
Author for correspondence.
Email: kraminin@mail.ru
Russian Federation, Makhachkala, 367015
E. N. Akhmedov
Institute for Geothermal Research, Dagestan Science Center, Russian Academy of Sciences
Email: kraminin@mail.ru
Russian Federation, Makhachkala, 367030
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