Automatic Welding, 2025, №06

2025 №06 (01)

DOI of Article 10.37434/as2025.06.02

2025 №06 (03)

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"Avtomatychne Zvaryuvannya" (Automatic Welding), #6, 2024, pp. 10-17

Features of formation of biocompatible coatings from silverdoped hydroxyapatite powder by microplasma spraying

S.M. Kaliuzhnyi¹, S.Yu. Maksymov¹, S.G. Voinarovych¹, O.M. Kyslytsia¹, N.V. Ulyanchich², V.V. Kolomiiets², V.M. Teplyuk¹, N.V. Prokhorenkova³

¹E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: 14dep_pwi@ukr.net
²Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine. 3 Omeliana Pritsaka Str., 03142, Kyiv, Ukraine. E-mail: dir@ipms.kyiv.ua
³School of Traditional and Alternative Energy, D. Serikbayev East Kazakhstan Technical University, 69 Protozanov St., Ust-Kamenogorsk, 070004, Kazakhstan. E-mail: kense@edu.ektu.kz

The work investigates the formation of bioceramic coatings from hydroxyapatite (HAp) doped with silver (HAp+Ag) using the microplasma spraying (MPS) method on titanium substrates. The influence of MPS technological parameters (current, plasmaforming gas flow rate, spraying distance) and particle size of the powder on the degree of particle melting, surface morphology and phase composition of the coatings was analyzed. It was established that optimization of MPS modes in an argon microplasma jet makes it possible to control the thermal decomposition of HAp and the ratio of crystalline to amorphous phases during the formation of HAp+Ag coatings. It was proven that HAp+Ag coatings produced by MPS exhibit antibacterial activity against Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa: they completely inhibit the growth of E. coli and significantly reduce the viability of the other tested microorganisms. HAp+Ag coatings on a zirconium interlayer demonstrated an adhesion strength exceeding 15 MPa, which is sufficient for their application on implant surfaces. The obtained results confirm the effectiveness of the applied MPS method and its prospects for creating economical, technologically optimized, and biofunctional coatings on titanium implants. 38 Ref., 2 Tabl., 5 Fig.
Keywords: microplasma spraying, biocompatible coating, silver-doped hydroxyapatite, splat test, phase composition of coatings


Received: 03.10.2025
Received in revised form: 18.11.2025
Accepted: 23.12.2025

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