Nitriding of Long-Term Holes in the Cyclic-Commuted Discharge

Author(s): Stechyshyn M., Dykha O.*, Oleksandrenko V.

Affiliation(s): Khmelnytskyi National University, 11, Instytutska St., 29016 Khmelnytskyi, Ukraine

*Corresponding Author’s Address: [email protected]

Issue: Volume 10, Issue 2 (2023)

Submitted: May 8, 2023
Received in revised form: August 18, 2023
Accepted for publication: August 24, 2023
Available online: August 25, 2023

Stechyshyn M., Dykha O., Oleksandrenko V. (2023). Nitriding of long-term holes in the cyclic-commuted discharge. Journal of Engineering Sciences (Ukraine), Vol. 10(2), pp. C11–C18. DOI: 10.21272/jes.2023.10(2).c2

DOI: 10.21272/jes.2023.10(2).c2

Research Area:  MANUFACTURING ENGINEERING: Materials Science

Abstract. The effect of anhydrous nitriding in a glow discharge on microhardness, phase composition, and wear resistance of long holes in steels C45, 37Cr4, and 41CrAlMo7 with direct current supply and in cyclically switched discharge (CSD) was studied. Nitriding was carried out on a UATR-1 anhydrous nitriding unit with a discharge chamber diameter of 400 mm and a working height of 700 mm. Anhydrous nitriding in a glowing discharge was carried out at a temperature of 560 °С, a voltage of 730 V, a pressure in the chamber of 120 MPa, and the nitriding duration was 6 h. It was established that using holes with a relatively small diameter of glow discharge in a cyclically switched discharge for nitriding creates conditions for obtaining modified layers with higher physical, mechanical, and tribological characteristics. The results of microhardness measurement and their comparison with X-ray phase analysis data confirm the formation of ε, γ, and α phases during nitriding along the entire height of the samples placed in the experimental model. The tests carried out in the dry friction mode showed an increase in the wear resistance of samples made of steel C45, 37Cr4, and 41CrAlMo7 during nitriding in a cyclically switched discharge. To achieve 100 μm wear of 41CrAlMo7 steel during nitriding in CSD, 1400 m of friction path and 1000 m – during nitriding with direct current is required. It was established that using long holes of a glow discharge with different types of power for nitriding creates conditions for obtaining modified layers with variable characteristics. Nitriding of holes with a relatively small diameter of a glow discharge with a different power supply creates conditions for obtaining modified layers with different physicomechanical and tribological characteristics.

Keywords: chemical-thermal treatment, glow discharge, strengthening, microhardness, wear resistance, dry friction.


  1. Genel, K., Demirkol, M., Capa, M. (2000). Effect of ion nitriding on fatigue behaviour of AISI 4140 steel. Materials Science and Engineering, Vol. 279(1–2), pр. 207–216.
  2. Pastukh, I. M. (2016). Energy model of glow discharge nitriding. Tech. Phys., Vol. 61, pp. 76–83.
  3. Borgioli, F., Galvanetto, E., Bacci, T. (2011). Surface modification of austenitic stainless steel by means of low pressure glow-discharge treatments with nitrogen. Coatings, Vol. 9(10), 604.
  4. Fossati, A., Galvanetto, E., Bacci, T., Borgioli, F. (2011). Improvement of corrosion resistance of austenitic stainless steels by means of glow-discharge nitriding. Corrosion Reviews, Vol. 29(5–6), pp. 209–221.
  5. Jin, C., Zhang, Y., Wang, C., Liu, M., Ling, W., He, L., Yang, Y., Peng, E. (2023). Plasma nitriding of inner surface of slender tubes using small diameter helicon plasma. Materials, Vol. 16(1), 311.
  6. Aizawa, T., Wasa, K. (2017). Low temperature plasma nitriding of inner surfaces in stainless steel mini-/micro-pipes and nozzles. Micromachines, Vol. 8, 157.
  7. Smirnov, I. V., Chornyi, A. V., Lysak, V. V., Sysoyev, M. O., Kysla, G. P. (2022). Ion-plasma nitriding of inner cylindrical surfaces of products. The Paton Welding Journal, Vol. 11, pp. 21–26. Available online:
  8. Filipowicz, M., Wach, P., Burdyński, K., Michalski, J., Komorek, Z. (2018). Gas nitriding of internal surfaces of deep holes. Surface Engineering, Vol. 23(2), pp. 24-29.
  9. Kwon, S. C., Park, M. J., Baek, W. S., Lee, G. H. (1992). Geometric effect of ion nitriding on the nitride growth behavior in hollow tube. Journal of Materials Engineering and Performance, Vol. 1, pp. 353–358.
  10. Elwar, J., Hunger, R. (2013). Plasma (ion) nitriding and nitrocarburizing of steels. Steel Heat Treating Fundamentals and Processes, Vol 4A, pp. 690–703.
  11. Pastukh, I. M. (2014). Subprocesses accompanying nitriding in a glow discharge. Tech. Phys., Vol. 59, pp. 1320–1325.
  12. Dykha, A., Makovkin, O. (2019). Physical basis of contact mechanics of surfaces. Journal of Physics: Conference Series, Vol. 1172(1), 012003.
  13. Đurišić, Ž., Kunosić, A., Trifunović, J. (2006). Influence of process parameters in pulse plasma nitriding of plain carbon steel. Surface Engineering, Vol. 22(2), pp. 147–152.
  14. Naeem, M., Raza, H. A., Shafiq, M., Zaka-ul-Islam, M., Iqbal, J., Díaz-Guillén, J. C., Zakaullah, M. (2017). Effect of pulsed duty cycle control on tribological and corrosion properties of AISI-316 in cathodic cage plasma nitriding. Mater. Res. Express, Vol. 4, 116507.
  15.  Naeem, M., Iqbal, J., Shabbir, F., Khan, M. A., Díaz-Guillén, J. C., Lopez-Badillo, C. M., Shafiq, M. (2019). Effect of pulsed current on cathodic cage plasma nitriding of non-alloyed steel. Mater. Res. Express, Vol. 6, 086537.
  16. Aghajani, H., Behrangi, S. (2017). Pulsed DC Glow Discharge Plasma Nitriding. In: Plasma Nitriding of Steels. Topics in Mining, Metallurgy and Materials Engineering, pp. 71–125. Springer, Cham.
  17. Kaplun, P. V., Dykha, О. V., Gonchar, V. А. (2018). Contact durability of 40Kh steel in different media after ion nitriding and nitroquenching. Mater Sci, Vol. 53, pp. 468–474.
  18. Shizhong, W., Liujie, X. (2020). Review on research progress of steel and iron wear-resistant materials. Acta Metall Sin, Vol. 56(4), pp. 523–538.
  19. Stechyshyn, M., Skyba, M. Y., Martynyuk, A., Zdorenko, D. (2023). Wear resistance of structural steels nitrided in a cyclically switched discharge with dry friction. Problems of Tribology, Vol. 28(1/107), pp. 20–24.
  20. Kurskoi, V. S., Lyukhovets, V. V., Zdybel, O. S. (2017). Hardware implementation of power supply of cyclically switched discharge in nitriding installations. Herald of Khmelnytskyi National University. Technical Sciences, Vol. 3, pp. 27–31. Available online:

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