Microstructure, Hardness and Tribological Characteristics of High-Entropy Coating Obtained by Detonation Spraying
Sagdoldina Z. Sulyubayeva L. Buitkenov D. Kambarov Y.
July 2025Multidisciplinary Digital Publishing Institute (MDPI)
Crystals
2025#15Issue 7
In this study, powders based on a high-entropy AlCoCrFeNi alloy obtained by mechanical alloying were successfully applied to a 316L stainless steel substrate by detonation spraying under various conditions. Their microstructural features, phase composition, hardness, and wear resistance were studied. A comparative analysis between the initial powder and the coatings was performed, including phase transformation modeling using Thermo-Calc under non-equilibrium conditions. The results showed that the phase composition of the powder and coatings includes body-centered cubic lattice (BCC), its ordered modification (B2), and face-centered cubic lattice FCC phases, which is consistent with the predictions of the Scheil solidification model, describing the process of non-equilibrium solidification, assuming no diffusion in the solid phase and complete mixing in the liquid phase. Rapid solidification and high-speed impact deformation of the powder led to significant grain refinement in the detonation spraying coating, which ultimately improved the mechanical properties at the micro level. The data obtained demonstrate the high efficiency of the AlCoCrFeNi coating applied by detonation spraying and confirm its potential for use in conditions of increased wear and mechanical stress. AlCoCrFeNi coatings may be promising for use as structural materials in the future.
detonation spraying , hardness , high-entropy alloys , microstructure , wear resistance
Text of the article Перейти на текст статьи
Research Center “Surface Engineering and Tribology”, Sarsen Amanzholov East Kazakhstan University, Ust-Kamenogorsk, 070002, Kazakhstan
International School of Engineering, Daulet Serikbayev East Kazakhstan Technical University, Ust-Kamenogorsk, 070003, Kazakhstan
Research Center “Surface Engineering and Tribology”
International School of Engineering
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026