Authors: I.N. Ganiev, G.M. Atoev, R.D. Ismonov, P.N. Abdukholikova

Title of the article: Thermopysical properties and thermodynamic functions of Zn-In system alloys

Year: 2026, Issue: 2, Pages: 36-44

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

Index UDK: 620.179.143.5

DOI: 10.26730/1999-4125-2026-2-36-44

Abstract: Products made from zinc alloys obtained by various casting and deformation methods are widely used in shipbuilding, instrument making, aviation, automotive and other industries. The successful use of zinc alloys for structural and non-structural purposes is due to their technological, physical, chemical and operational properties. Thus, the low melting point and high casting properties of zinc alloys make it possible to obtain high-strength castings with a good-quality surface using die casting and chill casting, which require virtually no additional processing. Zinc occupies a special position among metals that are mainly used for industrial purposes. Simple unalloyed zinc is practically not used in industry, its mechanical, physical, technological and other characteristics are not favorable enough for use. Additional alloying of zinc with various contents of chemical elements has a positive effect on the properties of zinc alloys, and the specified characteristics of zinc alloys are significantly enhanced. Therefore, most of the zinc obtained is used to obtain zinc-based alloys and as a protective coating for steel products. Various methods of spraying zinc coatings are also known – gas-thermal, etc. The use of these methods significantly improves the protective characteristics of zinc coatings, but, nevertheless, the problem of simplifying the application of such coatings has not been completely solved in the operation of metal products and structures. The paper presents the results of a study of the temperature dependence heat capacity, heat transfer coefficient and thermodynamic functions of alloys of the Zn-In system. The studies were conducted in the "cooling" mode. It was shown that with increasing temperature, the heat capacity, heat transfer coefficient, enthalpy and entropy of the alloys increase, and the Gibbs energy value decreases. The addition of indium to 1% (mass.) reduces the heat capacity, heat transfer coefficient, enthalpy and entropy the original alloy and increases the Gibbs energy value.

Key words: alloys of the Zn-In system heat capacity heat transfer coefficient “cooling” mode enthalpy entropy Gibbs energy

Receiving date: 28.10.2025

Approval date: 15.05.2026

Publication date: 29.06.2026

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