CREATION OF FUNCTIONAL COATINGS ON STEEL BY ELECTRIC-SPARK ALLOYING IN COMBINED INTERELECTRODE ENVIRONMENTS

Authors

DOI:

https://doi.org/10.18372/0370-2197.4(109).20756

Keywords:

electrsc-spark alloying (ESA), steel, chromium, titanium, environment, argon, propane-butane, microhardness, wear resistance

Abstract

The influence of the combined interelectrode environment composition at the process of electric spark alloying (ESA) by titanium and chromium on the structure, microhardness and wear resistance of the St.3 steel surface layers was revealed. The change in the environment composition occurred in 2 stages according to new technological schemes: argon - nitrogen, propane-butane - argon. An increase in the microhardness of titanium coatings to 6–7 GPa, and chromium coatings to 5–5.2 GPa was established due to the presence of nitrides (TiN, CrN) and carbides (TiC, Cr7C3) in them. The wear resistance of samples with coatings under friction-sliding conditions without lubrication for 5 hours is 6.14–10.32 times greater than the value of untreated St.3 steel.

Author Biographies

Halyna Lobachova, National Technical University of Ukraine, “Igor Sikorsky Kyiv Polytechnic Institute”

Ph.D., Senior lecturer in Department of Physical materials science and heat treatment of Y.O. Paton Institute of Materials Science and Welding, National Technical University of Ukraine, “Igor Sikorsky Kyiv Polytechnic Institute”, 03056, Ukraine, Kyiv, ave. Beresteiskyi, 37

Yevgen  Ivashchenko, Y.O. Paton Institute of Materials Science and Welding, National Technical University of Ukraine, “Igor Sikorsky Kyiv Polytechnic Institute”

Ph.D., Senior lecturer in Department of Physical materials science and heat treatment of Y.O. Paton Institute of Materials Science and Welding, National Technical University of Ukraine, “Igor Sikorsky Kyiv Polytechnic Institute”, 03056, Ukraine, Kyiv, ave. Beresteiskyi, 37

References

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Sydorenko S.I. Stvorennia zmitsnenykh pokryttiv na nyzkovuhletsevii stali metodom elektroiskrovoho lehuvannia u seredovyshchakh zminnoho skladu / S.I. Sydorenko, Ye.V. Ivashchenko, H.H. Lobachova, Yu.M. Havryliuk // Novi tekhnolohii. Naukovyi visnyk In-tu ekonomiky i novykh tekhnolohii. – 2013. – № 3 – 4 (41-42). – S. 3 – 7. http://nbuv.gov.ua/UJRN/NewTech_2013_3-4_3

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Published

2026-01-22

How to Cite

Lobachova, H., &  Ivashchenko, Y. (2026). CREATION OF FUNCTIONAL COATINGS ON STEEL BY ELECTRIC-SPARK ALLOYING IN COMBINED INTERELECTRODE ENVIRONMENTS. Problems of Friction and Wear, (4(109), 89–94. https://doi.org/10.18372/0370-2197.4(109).20756

Issue

No. 4(109) (2025)

Section

Проблеми тертя та зношування

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