RAS Chemistry & Material ScienceЖурнал физической химии Russian Journal of Physical Chemistry

  • ISSN (Print) 0044-4537
  • ISSN (Online) 3034-5537

An Equation of State of Corundum Based on Planck–Einstein Functions

PII
10.31857/S0044453723040234-1
DOI
10.31857/S0044453723040234
Publication type
Status
Published
Authors
Volume/ Edition
Volume 97 / Issue number 4
Pages
486-494
Abstract
The possibility of constructing the equation of state of a crystalline substance based on a linear combination of the Planck–Einstein functions is shown using the example of corundum α-Al2O3. Two versions of the corundum equation of state are obtained on the basis of functions F(V,T) and G(P,T) as a result of the self-consistency of the heat capacity values, the enthalpy increment, PVT data, the coefficient of thermal expansion, and the adiabatic modulus of elasticity. Both equations provide an acceptable description of the above properties in a wide range of variables (up to a pressure of 165 GPa and a temperature of 2250 K).
Keywords
функции Планка–Эйнштейна уравнение состояния корунд изобарная теплоемкость термическое расширение изотермическое сжатие
Date of publication
12.09.2025
Year of publication
2025
Number of purchasers
0
Views
11

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