Authors: I.N. Ganiev, G.M. Rakhmatulloeva, F.Sh. Zokirov, B.B. Eshov, N.A. Aminova, S.U. Khudoiberdizoda

Title of the article: Temperature dependence of heat capacity and changes in thermodynamic functions of aluminum conducting alloy AlTi0.1 with sodium

Year: 2024, Issue: 1, Pages: 34-42

Branch of knowledge: 2.6.1 Metal science and heat treatment of metals and alloys

Index UDK: 669.77:621

DOI: 10.26730/1999-4125-2024-1-34-42

Abstract: In the work, the heat capacity of the aluminum conductor alloy AlTi0.1 with sodium was determined in the “cooling” mode using the known heat capacity of a reference sample of A5N aluminum. By mathematical processing of the cooling rate curves of samples from the AlTi0.1 alloy with sodium and the standard, polynomials were obtained that describe their cooling rates. Further, based on the experimentally found values of the cooling rates of the alloy samples and the standard, knowing their masses, polynomials for the temperature dependence of the heat capacity of the alloys were established, which are described by a four-term equation. Using integrals of specific heat capacity, models of the temperature dependence of changes in enthalpy, entropy and Gibbs energy were established. It has been established that the heat capacity of the alloys increases with increasing temperature and sodium content. It has been shown that the addition of sodium increases the enthalpy and entropy of the original AlTi0.1 alloy and reduces the Gibbs energy.

Key words: aluminum conductor alloy AlTi01 sodium “cooling” mode heat capacity heat transfer coefficient enthalpy entropy Gibbs energy

Receiving date: 08.12.2023

Approval date: 15.02.2024

Publication date: 12.03.2024

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