Structure, Adhesion Strength and Corrosion Resistance of Vacuum Arc Multi-Period NbN/Cu Coatings


  • Hanna Oleksandrivna Postelnyk Kharkiv Polytechnic Institute, National Technical University, Kharkiv, 61002, Ukraine
  • O.V. Sobol Kharkiv Polytechnic Institute, National Technical University, Kharkiv, 61002, Ukraine
  • O. Chocholaty University of West Bohemia, Univerzitní 2732/8, 301 00 Pilsen, Czech Republic
  • G.I. Zelenskaya Kharkiv Polytechnic Institute, National Technical University, Kharkiv, 61002, Ukraine



The influence of deposition modes on the phase-structural state, corrosion resistance, and adhesive strength of vacuum-arc multi-period NbN/Cu coatings is studied. It was found that in thin layers (about 8 nm, in a constant rotation mode), regardless of the change in the pressure of the nitrogen atmosphere, a metastable δ - NbN phase forms (cubic crystal lattice of the NaCl type). At a layer thickness of ~ 40 nm or more, a phase composition changes from the metastable δ - NbN to the equilibrium ε - NbN phase with a hexagonal crystal lattice. In the presence of the ε - NbN phase in the niobium nitride layers, the highest adhesive strength is achieved with a value of LС5 = 96.5 N. Corrosion resistance tests have shown that for all the studied samples the corrosion process has mainly an anodic reaction. The highest corrosion resistance was shown by coatings obtained at a pressure of 7·10-4 Torr, with the smallest bias potential of -50 V and the smallest layer thickness; with a thickness of such a coating of about 10 microns, its service life in the environment of the formation of chloride ions is about a year.


Vacuum Arc Method; NbN/Cu; Phase Composition; Adhesion Strength; Impedance Spectroscopy; Polarization Resistance


[1] Volkov, A.I., Zharskiy, I.M. Bolshoy himicheskiy spravochnik[M]. Mn.: Sovremennaya shkola, 2005: 608.

[2] Guzmana, P., Caballeroa, J.L., Orozco-Hernándezb, G., Aperadora, W., Caicedoc, J.C. Tribocorrosion Behavior of Niobium-Based Thin Films for Biomedical Applications[J]. Tribology in Industry, 2018, 40(4): 624-632. DOI:

[3] Ren, P., Wen, M., Du, S.X., Meng, Q.N., Zhang, K., Zheng, W.T. Microstructure, mechanical and tribological properties of NbN/Ni coatings[J]. Materials Science Forum, 2017, 898: 1424-1430. DOI:

[4] Courtney, T.H., Reintjes, J., Wulff, J. Critical Field Measurements of Superconducting Niobium Nitride[J]. J. Appl. Phys., 1965, 36: 660. DOI:

[5] Lengauer, W., Bohn, M., Wollein, B., Lisak, K. Phase reactions in the Nb–N system below 1400°C[J]. Acta Materialia, 2000, 48(10): 2633-2638. DOI:

[6] Sobol’, O.V., Postelnyk, A.A., Meylekhov, A.A., Andreev, A.A., Stolbovoy, V.A., Gorban, V.F. Structural Engineering of the Multilayer Vacuum Arc Nitride Coatings Based on Ti, Cr, Mo and Zr[J]. Journal of nano- and electronik physics, 2017, 9(3): 03003. DOI:

[7] Sobol’, O.V., Andreev, A.A., Gorban’, V.F., Stolbovoy, V.A., Meylekhov, A.A., Postelnyk, А.А. Possibilities of structural engineering in multilayer vacuum-arc ZrN/ CrN coatings by varying the nanolayer thickness and application of a bias potential[J]. Technical Physics, 2016, 61(7): 1060. DOI:

[8] Musil, J., Zeman, P., Hruby’, H., Mayrhofer, P.H. ZrN/ Cu nanocomposite film—a novel superhard material [J]. Surface and Coatings Technology, 1999, 120–121: 179–183. DOI:

[9] Musil, J. Hard and superhard nanocomposite coatings[J]. Surface and Coatings Technology, 2000, 125(1- 3): 322-330. DOI:

[10] Sobol, O.V., Andreev, A.A., Corban’, V.F. Structural engineering of vacuum-arc multiperiod coatings[J]. Metal Science and Heat Treatment, 2016, 58(1-2): 37. DOI:


[12] Ramoul, C., Beliardouh, N.E., Bahi, R., Nouveau, C., Abdelghani, D., Walock, A.: Surface performances of PVD ZrN coatings in biological environments[J]. Tribology – Materials, Surfaces & Interfaces, 2018, 13: 12- 19. DOI:

[13] Shrayera, L.L. Korroziya[M]. Sprav. M.: Metallurgiyu, 1981: 632.


How to Cite

Postelnyk, H. O., Sobol, O., Chocholaty, O., & Zelenskaya, G. (2020). Structure, Adhesion Strength and Corrosion Resistance of Vacuum Arc Multi-Period NbN/Cu Coatings. Journal of Metallic Material Research, 3(1), 1–6.


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