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Formation of composite powders of multicomponent alloys of the Al x NiCoFeCr system obtained by mechanosynthesis
https://doi.org/10.22349/1994-6716-2025-122-2-75-85
Abstract
The paper studies formation of composite powders of the Alx NiCoFeCr system at 1.6 ≤ x ≤ 60 at%, suitable for coatings obtained by the microplasma spraying. The phase composition of all combinations was investigated. An analysis of the granulometric composition, uniformity of the distribution of elements in the synthesized conglomerates was carried out, and the Vickers microhardness of the powders was measured. For the equiatomic system, the microhardness indicators were 6–9 GPa with a range of values up to 16%, the morphology of the particles was round, the diameter was from 6 to 63 μm. It has been established that for microplasma spraying it is advisable to use powders containing aluminum 20 ≤ x ≤ 60 at%.
Keywords
high-entropy alloys,
multicomponent systems,
composite powder,
morphology,
granulometric composition,
microhardness
Supporting agencies: The study was supported by a grant from the Russian Science Foundation, project No 21-73-30019.
About the Authors
E. D. Nesterova
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
49 Shpalernaya St, 191015 St Petersburg
T. I. Bobkova
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
Cand. Sc. (Eng)
49 Shpalernaya St, 191015 St Petersburg
L. V. Mukhamedzyanova
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
49 Shpalernaya St, 191015 St Petersburg
M. V. Khromenkov
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
49 Shpalernaya St, 191015 St Petersburg
N. A. Serdyuk
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
Cand Sc. (Eng)
49 Shpalernaya St, 191015 St Petersburg
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Review
For citations:
Nesterova E.D., Bobkova T.I., Mukhamedzyanova L.V., Khromenkov M.V., Serdyuk N.A. Formation of composite powders of multicomponent alloys of the Al x NiCoFeCr system obtained by mechanosynthesis. Voprosy Materialovedeniya. 2025;(2(122)):75-85. (In Russ.) https://doi.org/10.22349/1994-6716-2025-122-2-75-85
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