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Abstract <p>The emissivity of Co–Ni alloys is described based on entropy analysis. The heat flux is normalized by the Curie temperature. It is shown that in dimensionless coordinates, the data array is well approximated by power functions. The concentration diagram is divided into two branches (high-cobalt and high-nickel), which correlates with the density of electronic states at the Fermi level. The proposed dependence can be used to estimate the radiative properties of alloys over the entire range of concentrations and temperatures of the solid-phase state of the system.</p>

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Entropy Analysis of Thermal Radiation of Ferromagnetic Alloys of the Cobalt–Nickel System

  • 期刊论文

  • 发表日期：

    2026年7月31日

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  • D. V. Kosenkov,
  • V. V. Sagadeev

摘要

Abstract

The emissivity of Co–Ni alloys is described based on entropy analysis. The heat flux is normalized by the Curie temperature. It is shown that in dimensionless coordinates, the data array is well approximated by power functions. The concentration diagram is divided into two branches (high-cobalt and high-nickel), which correlates with the density of electronic states at the Fermi level. The proposed dependence can be used to estimate the radiative properties of alloys over the entire range of concentrations and temperatures of the solid-phase state of the system.