Abstract: In this work, feasibility tests of new two-stage approach of deposition of thick high-entropy alloy coatings were performed. At the frst stage of this approach, metal composite coating is formed by detonation spraying of low-entropy metal powder blends. At the second stage, the composite precursor coating is heat treated in order to promote the synthesis of high-entropy phases. The tests were carried out using three diferent powder mixtures of Fe, Ni, Cu, Co, and Al powders. Experimental results showed that the detonation spraying allows formation of uniform metal composite coating. The microstructure analysis and microhardness measurements of the coating before and after heat treatments confrmed that the heat treatment enables element difusion in the coating followed by formation of CoFeNi, CoCuFe0.8Ni, and Al0.05CoCu0.3FeNi alloys with uniform fcc structure after recrystallization. At the same time, the fnal composition of the coatings difered from the targeted ones due to diferent deposition efciencies of the particles during detonation spraying process.

Cite: Batraev I. , Dudina D.V. , Rybin D.K. , Ulianitsky V.Y. , Sova A. , Ostovari Moghaddam A. , Doubenskaia M. , Trofimov E. , Samodurova M.
High-entropy alloy coating deposition by detonation spraying combined with heat treatment
International Journal of Advanced Manufacturing Technology. 2023. V.129. N5-6. P.2647–2659. DOI: 10.1007/s00170-023-12464-0 WOS Scopus РИНЦ OpenAlex

Dates:

Submitted:	Jun 30, 2023
Accepted:	Oct 2, 2023

Identifiers:

Web of science:	WOS:001084667900005
Scopus:	2-s2.0-85174396189
Elibrary:	59995268
OpenAlex:	W4387744277

Citing:

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Elibrary	1
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