Formation of an intermetallic Ni$_3$Al coating by cold spraying of a Ni–Al powder mixture mechanically processed in a planetary mill

A. E. Chesnokov, A. V. Smirnov, K. A. Skorokhod, V. O. Drozdov

Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia

Abstract: The features of the formation of an intermetallic Ni$_3$Al coating by cold spraying of a Ni–Al powder mixture mechanically processed in a planetary mill and prepared in a $V$-shaped mixer are presented. It is shown that the powder deposition efficiency is 1.5 times higher when coatings are obtained from a mechanically treated powder mixture of Ni and Al components. Subsequent high-temperature treatment in the furnace chamber creates a condition for the formation of an intermetallic compound of the Ni–Al system of various stoichiometric proportions.

Keywords: cold spray, composite material, high-energy planetary mill, nickel, aluminium, titanium nitride, X-ray analysis.

Received: 09.11.2022
Revised: 23.12.2022
Accepted: 30.12.2022

DOI: 10.21883/PJTF.2023.06.54808.19421

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