Hydrogen nitrogening in great discharge with AC power

Authors

  • N.M. Stechyshyna Khmelnitskyi National University
  • M.S. Stechyshyn Khmelnitskyi National University
  • A.V. Martynyuk Khmelnitskyi National University
  • Ya.M. Gladkiy Khmelnitskyi National University

DOI:

https://doi.org/10.31891/2079-1372-2021-102-4-6-11

Keywords:

nitriding, alternating current, cyclic-switched discharge

Abstract

The paper substantiates and experimentally shows the possibility of anhydrous nitriding in a glow discharge (BATR) with AC power supply (AC), as well as the possibility of switching the shape of pulses, changing their polarity, which is solved by introducing a glow discharge nitriding device with a power source alternating current of a given frequency. The analysis of the results of metallographic studies of the modified layer indicated the presence of a more uniform gradient of hardness in depth (gradient decreased by 1.7 - 3.5 times), which increases the wear resistance of parts and quality indicators of strengthening parts while reducing processing costs and installation costs. At BATR in CCR with supply of current of industrial frequency the installation for realization of process becomes cheaper. The latter factor will contribute, among other aspects, to the wider introduction of BATR technologies. The use of alternating current affects the course and results of nitriding, as periodic changes in the polarity of the electrodes of the chamber contributes to the cleaning of the surface from the adsorption layer, which positively affects the nature of nitrogen saturation (gradient of microhardness times), contributes to a significant change in the phase composition of the surface modified layer and allows to expand the technological capabilities of nitriding in the direction of obtaining the required performance characteristics of working surfaces, in particular tribological characteristics

References

1. Ionic chemical-thermal treatment of alloys / Arzamasov BN, Bratukhin AG, Eliseev Yu. S., Panayoti TA M .: Izd-vo MSTU im. N.E. Bauman, 1999. 400 p.
2. Pastukh IM Theory and practice of hydrogen-free nitriding in a glow discharge. Kharkiv: Nat. Research Center "Kharkov Institute of Physics and Technology", 2006. 364 p.
3. Hydrogen nitriding in a glow discharge as a method of increasing the wear resistance of structural steels / ME Skyba, NM Stechyshyna, VV Lyukhovets and others. Bulletin of Khmelnytsky National University. Technical Sciences, 2019. № 5. P. 7–12.
4. Pastukh IM, Lyukhovets VV, Kurskoy VS Features of nitriding in a glow discharge with non-stationary power supply of holes with relatively small diameter. Bulletin of Khmelnytsky National University. Technical sciences. 2013. № 3. S. 195–198.
5. Raiser Yu. P. Physics of gas discharge. M .: Nauka, 1987. 592 s.
6. Moskalev BI Discharge with a hollow cathode. M .: Energiya, 1969. 184 s.
7. Stechishina NM Influence of the parameters of hydrogen nitrogen nitrogen in a glow discharge on tribological and physico-chemical properties of steel 40X / N.M. Stechishina, M.S. Stechyshyn,, A.V. Martynyuk, N.V. Lukianyuk, VV Lyukhovets, Yu.M. Bilyk // Problems of Tribology. - Khmelnytskyi: KHNU, 2021. - V. 26 - №3 / 101. - P.31-41.
8. Device for nitriding in a glow discharge with AC power supply / IM Pastukh, GM Sokolova, VV Lyukhovets, OS Zdibel: Pat. on the utility model №118327 Ukraine: IPC C 23 C 8/36, C 23 C 8/48. № in 2016 06460; stated 13.06.2016; publ. 10.08.2017, Bull. № 15.
9. Stechyshyn, M.S. Physicochemical Properties of the Surface Layers of 40Kh Steel After Hydrogen-Free Nitriding in Glow Discharge / Stechyshyn, M.S., Skyba, M.E., Stechyshyna, N.M., Martynyuk, A.V., Mardarevych, R.S. // Materials Science. - Volume 55, Issue 6, 1 May 2020, Pages 892-898.
10. IM Pastukh, GM Sokolova, VV Lyukhovets, OS Zdibel: Pat. for utility model №112983 Ukraine: IPC C 23 C 8/36, C 23 C 8/48. № in 2016 05929; stated 01.06.2016; publ. 10.01.2017, Bull. №1.
11. Method of nitriding in a glow discharge with AC power supply / IM Pastukh, GM Sokolova, VV Lyukhovets, OS Zdibel: Pat. for utility model №112983 Ukraine: IPC C 23 C 8/36, C 23 C 8/48. № in 2016 05929; stated 01.06.2016; publ. 10.01.2017, Bull. №1.

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Published

2021-12-22

How to Cite

Stechyshyna, N., Stechyshyn, M., Martynyuk, A., & Gladkiy, Y. (2021). Hydrogen nitrogening in great discharge with AC power. Problems of Tribology, 26(4/102), 6–11. https://doi.org/10.31891/2079-1372-2021-102-4-6-11

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