Periodic features for emissivity of metals from the V period: correlation with surface tension and heat capacity at melting transition
D.V. Kosenkov, V.V. Sagadeev
Kazan National Research Technological University (KNRTU), Kazan, Russia
Keywords: emissivity, metal melting, surface tension coefficient, specific heat capacity, thermophysical properties, periodic system, Foot’s approximation, phase transition
Abstract
This paper considers a relation between the emissivity of metals from the V period of the Periodic System while melting process with thermophysical properties: surface tension coefficient (γ) and specific heat capacity (Cp). Taking the own and available experimental data and using the theoretical calculation within Foot’s approximation, we elucidated the laws of emissivity as a function of electronic stricture and interatomic interaction. It was demonstrated that a correlation between the emissivity and γ and Cp has a complicated behavior and this is dictated by general trends (emissivity increases with γ) and by a specific electron configuration for given elements. The results underline the importance of considering the periodicity and electronic configuration in forecasting the thermophysical properties of metals in the phase transition state.
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