3_2025_sen_5

Title of the article FORMATION OF SURFACE PROFILE IN CONTROLLED PULSE MODES OF ELECTROLYTIC-PLASMA TREATMENT
Authors

KOROLYOV Aleksandr Yu., Ph. D. in Eng., Assoc. Prof., Head of the Research Sector of Advanced Technologies, Scientific and Technological Park of BNTU “Polytechnic”, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

TOMILO Vyacheslav A., D. Sc. in Eng., Prof., Head of the Department “Machines and Technology of Metal Forming”, Belarusian National Technical University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

NISS Vladimir S., Ph. D. in Eng., Assoc. Prof., Head of the Innovation and Production Center for Medical Equipment and Products, Research Polytechnic Institute of BNTU, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.
In the section MECHANICAL ENGINEERING MATERIALS AND TECHNOLOGIES
Year 2025
Issue 3(72)
Pages 46–53
Type of article RAR
Index UDK 621.9.047.7
DOI https://doi.org/10.46864/1995-0470-2025-3-72-46-53
Abstract To improve the efficiency of electrolytic-plasma treatment methods, modes based on the use of controlled pulses have been developed. The modes are implemented by alternating high-voltage pulses corresponding to the electrolytic-plasma region and current-free pauses between them. At the initial moment of switching on the high-voltage pulse, the electrochemical mode is in effect (at the stage of forming the vapor-gas shell). The efficiency of the pulse process is increased by intensive metal removal during the electrochemical mode and optimization of the duration of the electrolytic-plasma mode, which ensures high surface quality. According to the research results, it has been established that the developed pulse method, due to combining the advantages of both the electrolytic-plasma and electrochemical modes, ensures the formation of a surface with a smoother and flatter profile of microroughnesses compared to traditional electrolytic-plasma treatment with direct current. The presence of the electrochemical component leads to the preferential dissolution of high protrusions and intensive smoothing of irregularities, which helps to reduce the profile inclination angle and reduce the number of protrusions per unit length (HSC parameter). The accentuated dissolution of protrusions in the pulse process compared to direct current processing is confirmed by the dynamics of the change in the Rsk parameter, which determines the profile asymmetry (predominance of protrusions or depressions) — for the pulse mode, the Rsk parameter has higher values, which indicates a more intensive smoothing of protrusions.
Keywords electrolytic-plasma treatment, pulses, vapor-gas shell, anodic process, current density, roughness parameters
  You can access full text version of the article.
Bibliography
  1. Zeidler H., Boettger-Hiller F., Edelmann J., Schubert A. Surface finish machining of medical parts using plasma electrolytic polishing. Procedia CIRP, 2016, vol. 49, pp. 83–87. DOI: https://doi.org/10.1016/j.procir.2015.07.038.
  2. Smyslov A.M., Smyslova M.K., Mingazhev A.D., Selivanov K.S. Mnogoetapnaya elektrolitno-plazmennaya obrabotka izdeliy iz titana i titanovykh splavov [Multistage plasma electrolytic treatment of titanium and titanium alloy products]. Vestnik USATU, 2009, vol. 13, no. 1(34), pp. 141–145 (in Russ.).
  3. Tamindarov D.R., Smyslov A.M., Sidelnikov A.V. Vliyanie sostava elektrolita na protsess elektrolitno-plazmennogo polirovaniya titanovykh splavov [Influence of electrolyte composition on the process of electrolytic-plasma polishing of titanium alloys]. Fizika i khimiya obrabotki materialov, 2022, no. 5, pp. 31–38. DOI: https://doi.org/10.30791/0015-3214-2022-5-31-38 (in Russ.).
  4. Stepputat V.N., Zeidler H., Safranchik D., Strokin E., Böttger-Hiller F. Investigation of post-processing of additively manufactured Nitinol smart springs with plasma-electrolytic polishing. Materials, 2021, vol. 14, iss. 15. DOI: https://doi.org/10.3390/ma14154093.
  5. Navickaitė K., et al. Plasma electrolytic polishing of Nitinol: investigation of functional properties. Materials, 2021, vol. 14, iss. 21. DOI: https://doi.org/10.3390/ma14216450.
  6. Aliakseyeu Yu.G., Korolyov A.Yu., Niss V.S. Elektrolitno-plazmennoe polirovanie kobalt-khromovykh splavov meditsinskogo naznacheniya [Electrolytic-plasma polishing of cobalt-chromium alloys for medical products]. Proceedings of the National Academy of Sciences of Belarus. Physical-technical series, 2019, vol. 64, no. 3, pp. 296–303. DOI: https://doi.org/10.29235/1561-8358-2019-64-3-296-303 (in Russ.).
  7. Aliakseyeu Yu., Bubulis A., Korolyov A., Niss V., Kandrotaitė Janutienė R. Plasma electrolyte polishing of titanium and niobium alloys in low concentrated salt solution based electrolyte. Mechanika, 2021, vol. 27, no. 1, pp. 88–93. DOI: https://doi.org/10.5755/j02.mech.25044.
  8. Korolyov A., et al. Electrolytic plasma polishing of NiTi alloy. Mathematical models in engineering, 2021, vol. 7, iss. 4, pp. 70–80. DOI: https://doi.org/10.21595/mme.2021.22351.
  9. Witzke K., et al. Mechanical and plasma electrolytic polishing of dental alloys. Materials, 2023, vol. 16, iss. 18. DOI: https://doi.org/10.3390/ma16186222.
  10. Dobrynin D.A. Elektrolitno-plazmennoe polirovanie titanovykh splavov VT6 i VT8M-1 [Plasma electrolytic polishing of titanium alloys VT6 and VT8M-1]. Proceedings of VIAM, 2017, no. 7(55), pp. 12–21. DOI: https://dx.doi.org/10.18577/2307-6046-2017-0-7-2-2 (in Russ.).
  11. Kulikov I.S., Vashchenko S.V., Kamenev A.Ya. Elektrolitno-plazmennaya obrabotka materialov [Plasma electrolytic treatment of materials]. Minsk, Belorusskaya nauka Publ., 2010. 232 p. (in Russ.).
  12. Korolyov A.Yu., Aliakseyeu Yu.G., Niss V.S., Parshuto A.E. Elektrolitno-plazmennaya obrabotka v upravlyaemykh impulsnykh rezhimakh [Electrolyte-plasma treatment in controlled pulse modes]. Science & technique, 2021, vol. 20, no. 4, pp. 279–286. DOI: https://doi.org/10.21122/2227-1031-2021-20-4-279-286 (in Russ.).
  13. Sinkevich Yu.V., Sheleg V.K., Yankovsky I.N., Belyaev G.Ya. Elektroimpulsnoe polirovanie splavov na osnove zheleza, khroma i nikelya [Electroimpulse polishing of iron-, chromium-, and nickel-based alloys]. Minsk, Belorusskiy natsionalnyy tekhnicheskiy universitet Publ., 2014. 325 p. (in Russ.).
  14. Grilikhes S.Ya. Elektrokhimicheskoe i khimicheskoe polirovanie. Teoriya i praktika. Vliyanie na svoystva metallov [Electrochemical and chemical polishing: Theory and practice. Influence on metal properties]. Leningrad, Mashinostroenie. Leningradskoe otdelenie Publ., 1987. 232 p. (in Russ.).
  15. Leach R. Surface topography characterisation in micro and nano technologies. Fundamental principles of engineering nanometrology, 2014, pp. 241–294.