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

Title of the article: Anode behavior of Zn-In system alloys

Year: 2025, Issue: 3, Pages: 101-109

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

Index UDK: 539.219.3

DOI: 10.26730/1999-4125-2025-3-101-109

Abstract: Metal corrosion is considered one of the main problems for the trouble-free operation of any mechanism. Due to the release of chemicals into the environment, machine parts are exposed to the corrosive activity of this environment. One way to protect against such activity is the use of new zinc-based alloys. Zinc occupies a special position among metals that are mainly used for industrial purposes. Simple unalloyed zinc, which is a structural material, is practically not used in industry; its mechanical, physical, technological and other characteristics are not favorable enough for use. However, with additional alloying of zinc with different contents of chemical elements, it has a positive effect on zinc alloys, in this case, the indicated characteristics of zinc alloys are significantly enhanced. Therefore, most of the zinc produced is used to produce zinc-based alloys. 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 resolved in the operation of metal products and structures. Therefore, the development of new and improved alloys for zinc coating is of great interest to researchers; developments are mainly aimed at the availability and simplicity of methods; ideally, methods should be developed in such a way that, so that they are similar to the methods of applying paints and varnishes. The paper presents the results of a study of the anodic behavior of alloys of the Zn-In system in a NaCl electrolyte environment. It has been shown that the addition of indium (0.01-0.5 wt.%) improves the corrosion resistance of zinc by 20%. With increasing indium concentration in the initial alloy, the potentials of corrosion, pitting and repassivation shift to a positive range of values. An increase in the concentration of chloride ion in a NaCl solution promotes an increase in the corrosion rate of alloys, which is accompanied by a shift to the negative region of the main electrochemical potentials of the alloys.

Key words: Zn-In alloys anodic behavior potentiostatic method free corrosion potential pitting and repassivation potentials corrosion rate

Receiving date: 10.01.2025

Approval date: 10.06.2025

Publication date: 26.06.2025

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