Automatic Welding, 2025, №03

2025 №03 (05)

DOI of Article 10.37434/as2025.03.06

2025 №03 (07)

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"Avtomatychne Zvaryuvannya" (Automatic Welding), #3, 2024, pp. 39-44

Detonation spraying of coatings containing the Cr₂AlC max-phase

N.V. Vigilianska¹, C. Senderowski², T.V. Tsymbalista¹, K.V. Iantsevitch¹, A.I. Kildiy¹, O.Yo. Gudymenko³

¹E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: pewinataliya@gmail.com
²Warshaw university of technology. Pl. Politechniki 1, 00-661, Warsaw, Poland
³V.E. Lashkaryov Institute of Semiconductor Physics of the NAS of Ukraine. 41 Nauky Ave., 03028, Kyiv, Ukraine. E-mail: gudymen@ukr.net

The paper investigates the process of forming coatings containing the Cr₂AlC MAX-phase under detonation spraying conditions using powders produced by mechanochemical synthesis. The powder mixtures of the Cr-Al-C and Cr₃ C₂-Al systems were used as initial components. It has been established that no new phases are formed in the Cr-Al-C system as a result of mechanochemical synthesis within 1.5...5 h, while the synthesis of the Cr₂ AlC MAX-phase occurs during the detonation spraying of the MChS-powder of this mixture. In the Cr₃ C₂-Al system, the formation of the Cr₂ AlC MAX-phase is observed already at the processing stage after 1.5 h. Due to the interaction reaction of the components in the process of detonation spraying, the content of the MAX-phase increases in the coating relative to the MChS-powder. Both types of coatings contain phases of chromium carbides and oxide components of chromium and aluminium. The produced coatings are characterised by high microhardness (about 5000 MPa), dense lamellar structure and corrosion resistance in a 3 % NaCl solution. 18 Ref., 3 Tabl., 6. Fig.
Keywords: MAX-phase, detonation spraying, coating, microstructure, corrosion resistance


Received: 02.05.2025
Received in revised form: 12.05.2025
Accepted: 19.05.2025

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