OBRABOTKAMETALLOV Vol. 28 No. 3 2026 144 TECHNOLOGY References 1. Dal’skii A.M., Kosilova A.G., Meshcheryakov R.K., Suslov A.G., eds. Spravochnik tekhnologamashinostroitelya. V 2 t. T. 2 [Handbook of the mechanical engineering technologist. In 2 vol. Vol. 2]. 5th ed., corrected. Moscow, Mashinostroenie-1 Publ., 2003. 944 p. ISBN 5-217-03085-2. 2. Çelik A., Karakan M., Alsaran A., Efeoglu I. The investigation of structural, mechanical and tribological properties of plasma nitrocarburized AISI 1020 steel. Surface and Coatings Technology, 2005, vol. 200 (5–6), pp. 1926–1932. DOI: 10.1016/j.surfcoat.2005.08.028. Comparative assessment of wear resistance of combined coatings on carbon steels produced by electrolytic-plasma treatment followed by Cr or Сo–W electrodeposition Alexander Perkov 1, a, *, Sergey Silkin 1, b, Sergey Kusmanov 2, c, Ivan Tambovskiy 2, d 1 Kostroma State University, 17 Dzerzhinskogo St., Kostroma, 156005, Russian Federation 2 Moscow State Technological University “STANKIN”, 1 Vadkovsky Lane, Moscow, 127055, Russian Federation a https://orcid.org/0000-0002-5265-5186, sachaperkow@gmail.com; b https://orcid.org/0000-0002-3915-642X, longamin@mail.ru; c https://orcid.org/0000-0002-7156-102X, sakusmanov@yandex.ru; d https://orcid.org/0000-0002-7633-6059, ivan.vt@itambovskiy.ru Obrabotka metallov - Metal Working and Material Science Journal homepage: http://journals.nstu.ru/obrabotka_metallov Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science. 2026 vol. 28 no. 3 pp. 129–146 ISSN: 1994-6309 (print) / 2541-819X (online) DOI: 10.17212/1994-6309-2026-28.3-129-146 ART I CLE I NFO Article history: Received: 09 May 2026 Revised: 25 May 2026 Accepted: 29 July 2026 Available online: 15 September 2026 Keywords: Electrolytic-plasma carburizing Galvanic coatings Chromium coating Co–W coating Combined treatment Lubricated friction Wear resistance Carbon steel Surface hardening Reciprocating sliding Funding This research was funded by the Russian Science Foundation (grant No. 22-2920231) to Kostroma State University. ABSTRACT Introduction. 0.2% C and 0.45% C carbon structural steels exhibit insuffi cient wear resistance under reciprocating sliding in lubricated conditions, which limits the service life of machine components. This study investigates the wear resistance of a combined surface treatment involving electrolytic-plasma hardening (quenching or carburizing followed by quenching) followed by the deposition of chromium and Co–W galvanic coatings of diff erent thicknesses. Materials and methods. Samples were subjected to electrolytic-plasma carburizing at 850 °C for 3 min or quenching at 900 °C in aqueous electrolytes. Subsequently, Cr and Co–W coatings with thicknesses of 1 and 10 μm were deposited on the prepared surfaces. Wear resistance was evaluated using a reciprocating sliding test with a bearing steel ball (0.1% C-15% Cr) under a load of 10 N in mineral oil for 1–3 days, with wear volume measured by profi lometry. Results and discussion. It was found that the combined treatment signifi cantly improved wear resistance compared to the individual hardening methods. On untreated steel, thin galvanic coatings were prone to breakthrough, resulting in low wear resistance of the system. Electrolytic-plasma quenching of 0.45% C steel improved the performance compared to the untreated condition; however, the best results were achieved on carburized steel 20. Increasing the coating thickness from 1 to 10 μm led to a decrease in wear resistance. The highest wear resistance was demonstrated by the system consisting of 0.2% C steel after electrolytic-plasma carburizing followed by quenching and a thin (1 μm) chromium coating. The obtained results can be used in the development of eff ective surface hardening technologies for components operating under lubricated sliding conditions (shafts, guides, hydraulic cylinder elements), while maintaining a relatively soft core. For citation: Perkov A.S., Silkin S.A., Kusmanov S.A., Tambovskiy I.V. Comparative assessment of wear resistance of combined coatings on carbon steels produced by electrolytic-plasma treatment followed by Cr or Сo–W electrodeposition. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science, 2026, vol. 28, no. 3, pp. 129–146. DOI: 10.17212/1994-6309-2026-28.3129-146. (In Russian). ______ * Corresponding author Perkov Alexander S., Post-graduate Student Kostroma State University, 17 Dzerzhinskogo St., 156005, Kostroma, Russian Federation Tel.: +7 910 808-41-87, e-mail: sachaperkow@gmail.com
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