COMBINED TREATMENT AND WEAR MECHANISM OF NITRIDED COATINGS ON TITANIUM ALLOY VT-6

Authors

DOI:

https://doi.org/10.18372/0370-2197.2(103).18694

Keywords:

titanium alloy, wear, nitriding, laser treatment, wear intensity, nitrided layer

Abstract

The wear process in the tribological system: nitrided titanium alloy - hydraulic fluid - steel is studied. It is shown that the level of wear is determined by tribological structures of the dissipative type, which are self-formed at the evolutionary stage of running-in. Using a linear approximation of the Boltzmann transfer equation, the exponential nature of the running-in stage was established, at which the wear intensity decreases from the initial to the steady-state level and then fluctuates around a constant mean with a constant variance. AMG-10 liquid selectively interacts with the elements. Electronegative elements dissolve in the lubricant, while electropositive elements are transferred to the counterbody, interact with the products of the mechanical destruction of lubricant molecules, and take an active part in the formation of the tribostructure, which reduces the level of direct interaction of the solids in contact. Preliminary laser treatment of titanium alloy activates the process of subsequent nitriding, which makes it possible to reduce the nitriding time while increasing the thickness of the wear-resistant nitrided layer. The use of laser pretreatment on real parts makes it possible to increase the service life of friction units and reduce production costs during their manufacture.

Author Biographies

 Volodymyr Kharchenko, National Aviation University

head of the laboratory of the Department of Applied Mechanics and Materials Engineering of the National Aviation University, 1 Lubomyr Huzar Avenue, Kyiv, Ukraine

Myroslav Kindrachuk, National Aviation University

Doctor of Technical Sciences, Professor, Professor of the Department of Applied Mechanics and Materials Engineering, National Aviation University, 1 Lubomyra Huzar Ave., Kyiv, Ukraine

Volodymyr  Marchuk, National Aviation University

doctor of Technical Sciences, professor Department of Logistics National Aviation University, Huzar Ave., Kyiv, Ukraine

 Alina Yurchuk, National Aviation University

 Candidate of Technical Sciences, Associate Professor, Department of Computerized Electrical Systems and Technologies National Aviation University, 1 Liubomyr Huzar Ave.

 Ivan Kostetskyi, National Aviation University

 PhD student of the Department of Applied Mecha-nics and Materials Engineering, National Aviation University, 1 Lubomyra Huzar Ave., Kyiv, Ukraine, 03058

References

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Published

2024-06-25

How to Cite

Kharchenko, Volodymyr, Kindrachuk, M.,  Marchuk, V., Yurchuk, Alina, & Kostetskyi, Ivan. (2024). COMBINED TREATMENT AND WEAR MECHANISM OF NITRIDED COATINGS ON TITANIUM ALLOY VT-6. Problems of Friction and Wear, (2(103), 121–129. https://doi.org/10.18372/0370-2197.2(103).18694

Issue

No. 2(103) (2024)

Section

Проблеми тертя та зношування

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