Effect of Calcium on the Temperature Dependence of the Heat Capacity and Thermodynamic Functions Variability of the AK12M2 Alloy


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Abstract

The temperature dependence of the heat capacity, the heat transfer coefficient, and the change in the thermodynamic functions (enthalpy, entropy, and Gibbs energy) of AK12M2 alloy modified by calcium has been studied in the “cooling” mode. The heat capacity of alloys has been measured on a set-up based on the C-calorimeter method with a heat meter and an adiabatic shell. The results of the study showed that, in the temperature range of 300–550 K, the heat capacity increases by 20.1–21.4% for AK12M2 alloy modified with 0.1–1.0 wt % calcium. As the calcium content increases, the heat capacity of the initial alloy decreases by 4.86–6.41%.

About the authors

F. Sh. Zokirov

Osimi Tajik Technical University

Email: ganiev48@mail.ru
Tajikistan, Dushanbe, 734042

M. M. Sangov

Tajik State Pedagogical University

Email: ganiev48@mail.ru
Tajikistan, Dushanbe, 734003

N. F. Ibrokhimov

Nikitin Institute of Chemistry, Academy of Sciences of the Republic of Tajikistan

Email: ganiev48@mail.ru
Tajikistan, Dushanbe, 734063

I. N. Ganiev

Nikitin Institute of Chemistry, Academy of Sciences of the Republic of Tajikistan

Author for correspondence.
Email: ganiev48@mail.ru
Tajikistan, Dushanbe, 734063

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