Skip to main content
Log in

Origin of Friction in Running-in Sliding Wear of Nitride Coatings

  • Original Paper
  • Published:
Tribology Letters Aims and scope Submit manuscript

Abstract

To investigate the origin of running-in friction in unlubricated sliding wear, a magnetron sputtered multilayer coating TiAlN/VN was tested on a ball-on-disc tribometer for a series of sliding durations from 10 to 1000 cycles, followed by careful observation of the obtained worn surfaces using an field-emission gun scanning electron microscope. Three steps of friction variation were found: (1) prior to wear particle generation, low initial friction coefficient was around 0.2–0.25 purely attributed to the asperity contact; (2) then it increased steeply to a range of 0.4–0.5 in the first 100 cycles following the generation, breaking and agglomeration of wear particles, and in particular the scaling-up of fish-scale-like tribofilm; (3) eventually it approached to a steady-state value around 0.5 when the friction was governed by the viscous shearing of the tribofilm. It is concluded that, under unlubricated sliding wear, the friction behaviour of transition metal nitride hard coating is dominated by the viscous shearing of tribofilm adhesively bonding to the parent nitride coating.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10

Similar content being viewed by others

References

  1. Luo, Q., Hovsepian, P.Eh., Lewis, D.B., Münz, W.D., Kok, Y.N., Cockrem, J., Bolton, M., Farinotti, A.: Tribological perperties of unbalanced magnetron sputtered nanoscale multilayer coatings TiAlN/VN and TiAlCrYN deposited on plasma nitrided steels. Surf. Coat. Technol. 193, 39–45 (2005)

    Article  CAS  Google Scholar 

  2. Luo, Q., Hovsepian, P.Eh.: Transmission electron microscopy and energy dispersive X-ray spectroscopy on the worn surface of nano-structured TiAlN/VN multilayer coating. Thin Solid Films 497, 203–209 (2006)

    Article  CAS  ADS  Google Scholar 

  3. Luo, Q., Zhou, Z., Rainforth, W.M., Hovsepian, P.Eh.: TEM-EELS study of low-friction superlattice TiAlN/VN coating: the wear mechanisms. Tribol. Lett. 24, 171–178 (2006)

    Article  CAS  Google Scholar 

  4. Ajayi, O.O., Ludema, K.C.: Mechanism of transfer film formation during repeat pass sliding of ceramic materials. Wear 140, 191–206 (1990)

    Article  CAS  Google Scholar 

  5. Xu, J.G., Kato, K.: Formation of tribochemical layer of ceramics sliding in water and its role for low friction. Wear 245, 61–75 (2000)

    Article  CAS  Google Scholar 

  6. Fischer, T.E., Zhu, Z., Kim, H., Shin, D.S.: Genesis and role of wear debris in sliding wear of ceramics. Wear 245, 53–60 (2000)

    Article  CAS  Google Scholar 

  7. Jones, A.H., Dobedoe, R.S., Lewis, M.H., Lumby, R.J.: Sialon/TiB2 composites: synthesis, properties, and tribology. Br. Ceram. Trans. 98, 274–281 (1999)

    Article  CAS  Google Scholar 

  8. Biswas, S.K.: Some mechanisms of tribofilm formation in metal/metal and ceramic/metal sliding interactions. Wear 245, 178–189 (2000)

    Article  CAS  Google Scholar 

  9. Xu, J., Kato, K.: The effect of water vapour on the agglomeration of wear particles of ceramics. Wear 202, 165–171 (1997)

    Article  CAS  Google Scholar 

  10. Xu, J., Kato, K., Hirayama, T.: The transition of wear mode during the running-in process of silicon nitride sliding in water. Wear 205, 55–63 (1997)

    Article  CAS  Google Scholar 

  11. Dienwiebel, M., Pohlmann, K.: Nanoscale evolution of sliding metal surfaces during running-in. Tribol. Lett. 27, 255–260 (2007)

    Article  CAS  Google Scholar 

  12. Nogueira, I., Dias, A.M., Gras, R., Progri, R.: An experimental model for mixed friction during running-in. Wear 253, 541–549 (2002)

    Article  CAS  Google Scholar 

  13. Engqvist, H., Hogberg, H., Botton, G.A., Ederyd, S., Axen, N.: Tribofilm formation on cemented carbides in dry sliding conformal contact. Wear 239, 219–228 (2000)

    Article  CAS  Google Scholar 

  14. Münz, W.D., Donohue, L.A., Hovsepian, P.Eh.: Properties of various large-scale fabricated TiAlN- and CrN-based superlattice coatings grown by combined cathodic arc-unbalanced magnetron sputter deposition. Surf. Coat. Technol. 125, 269–277 (2000)

    Article  Google Scholar 

  15. Hovsepian, P.Eh., Lewis, D.B., Münz, W.D.: Recent progress in large scale manufacturing of multilayer/superlattice hard coatings. Surf. Coat. Technol. 133–134, 166–175 (2000)

    Article  Google Scholar 

  16. Luo, Q., Lewis, D.B., Hovsepian, P.Eh., Münz, W.D.: Transmission electron microscopy and x-ray diffraction investigation of the microstructure of nanoscale multilayer TiAlN/VN grown by unbalanced magnetron deposition. J. Mater. Res. 19, 1093–1104 (2004)

    Article  CAS  ADS  Google Scholar 

  17. Meidia, H., Cullis, A.G., Schonjahn, C., Münz, W.D., Rodenburg, J.M.: Investigation of intermixing in TiAlNyVN nanoscale multilayer coatings by energy-filtered TEM. Surf. Coat. Technol. 151–152, 209–213 (2002)

    Article  Google Scholar 

  18. Münz, W.D., Smith, I.J., Lewis, D.B., Creasey, S.: Droplet formation on steel substrates during cathodic steered arc meytal ion etching. Vacuum 48, 473–481 (1997)

    Article  Google Scholar 

  19. Rymuza, Z.: Energy concept of the coefficient of friction. Wear 199, 187–196 (1996)

    Article  CAS  Google Scholar 

  20. Luo, Q., Zhou, Z., Rainforth, W.M., Bolton, M.: Effect of tribofilm formation on the dry sliding friction and wear properties of magnetron sputtered TiAlCrYN coatings. Tribol. Lett. 34, 113–124 (2009)

    Article  CAS  Google Scholar 

  21. Blau, P.J.: On the nature of running-in. Tribol. Int. 38, 1007–1012 (2005)

    Article  Google Scholar 

  22. Blau, P.J.: Embedding wear models into friction models. Tribol. Lett. 34, 75–79 (2009)

    Article  CAS  Google Scholar 

  23. Luo, Q., Rainforth, W.M., Münz, W.D.: TEM studies of the wear of TiAlN/CrN superlsttice coatings. Scr. Mater. 45, 399–404 (2001)

    Article  CAS  Google Scholar 

  24. Inman, I.A., Datta, P.K., Du, H.L., Burnell-Gray, J.S., Pierzgalski, S., Luo, Q.: Studies of high temperature sliding wear of metallic dissimilar interfaces. Tribol. Int. 38, 812–823 (2005)

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Q. Luo.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Luo, Q. Origin of Friction in Running-in Sliding Wear of Nitride Coatings. Tribol Lett 37, 529–539 (2010). https://doi.org/10.1007/s11249-009-9548-x

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11249-009-9548-x

Keywords

Navigation