Tribology Letters

, 64:28 | Cite as

Mechano-Chemical Surface Modification with Cu2S: Inducing Superior Lubricity

  • Michael Varenberg
  • Grigory Ryk
  • Alexander Yakhnis
  • Yuri Kligerman
  • Neha Kondekar
  • Matthew T. McDowell
Original Paper

Abstract

Advances toward low friction surfaces are in growing demand from many economic sectors for energy efficiency and environmental safety. However, the traditional approach of multi-grade oil formulation is limited by its inability to induce pollution-free generation of uniform oil-retaining films needed to improve surface lubricity. Here, a direct route to the formation of a surface layer of superior lubricity is presented as an alternative to the use of oil additives for friction reduction. The deformation-induced generation of a surface film consisting of low-shear-strength oil-retaining compounds is obtained via supplying chemically beneficial elements during a widely used surface finishing mechanical treatment. An ultra-low friction coefficient of about 0.01 is obtained with base oil lubrication after tailoring the surface chemistry by shot peening using a mixture of Cu2S and Al2O3; this result opens new horizons for surface engineering.

Keywords

Plastic deformation Surface activation Solid-state chemistry Surface films Friction 

References

  1. 1.
    Moore, D.F.: Principles and Applications of Tribology, 1st edn. Pergamon Press, Oxford (1975)Google Scholar
  2. 2.
    Bhushan, B.: Introduction to Tribology. Wiley, New York (2002)Google Scholar
  3. 3.
    Holmberg, K., Andersson, P., Erdemir, A.: Global energy consumption due to friction in passenger cars. Tribol. Int. 47, 221–234 (2012)CrossRefGoogle Scholar
  4. 4.
    Dowson, D.: History of Tribology. Longman, London (1979)Google Scholar
  5. 5.
    Rabinowicz, E.: Friction and Wear of Materials. Wiley, New York (1965)Google Scholar
  6. 6.
    Czichos, H.: Tribology: A Systems Approach to the Science and Technology of Friction, Lubrication, and Wear. Elsevier, New York (1978)Google Scholar
  7. 7.
    Bowden, F.P., Gregory, J.N., Tabor, D.: Lubrication of metal surfaces by fatty acids. Nature 156, 97–101 (1945)CrossRefGoogle Scholar
  8. 8.
    Ludema, K.C.: Friction, Wear, Lubrication: A Textbook in Tribology. CRC Press, Boca Raton (1996)CrossRefGoogle Scholar
  9. 9.
    Hutchings, I.M.: Tribology: Friction and Wear of Engineering Materials. Edward Arnold, London (1992)Google Scholar
  10. 10.
    Blau, P.J.: Friction Science and Technology: From Concepts to Applications, 2nd edn. CRC Press, Boca Raton (2008)CrossRefGoogle Scholar
  11. 11.
    Shitara, Y., Suzuki, S., Kaimai, T., Nanao, H., Mori, S.: Improvement of tribological properties with gallic acid derivatives in boundary lubrication. J Jpn Soc Tribol 56(1), 55–61 (2011)Google Scholar
  12. 12.
    Kalpakjian, S., Schmid, S.R.: Manufacturing Processes for Engineering Materials, 5th edn. Pearson Education, Upper Saddle River (2008)Google Scholar
  13. 13.
    Kostetskii, B.I., Nosovskii, I.G., Karaulov, A.K., Bershadskii, L.I., Kostetskaya, N.B., Lyashko, V.A., Sagach, M.F.: The Surface Strength of Materials in Friction (In Russian). Tekhnika, Kiev (1976)Google Scholar
  14. 14.
    Fischer, T.E.: Tribochemistry. Annu. Rev. Mater. Sci. 18, 303–323 (1988)CrossRefGoogle Scholar
  15. 15.
    Felts, J.R., Oyer, A.J., Hernandez, S.C., Whitener, K.E., Robinson, J.T., Walton, S.G., Sheehan, P.E.: Direct mechanochemical cleavage of functional groups from graphene. Nat. Commun. 6, 6467 (2015)CrossRefGoogle Scholar
  16. 16.
    Gosvami, N.N., Bares, J.A., Mangolini, F., Konicek, A.R., Yablon, D.G., Carpick, R.W.: Mechanisms of antiwear tribofilm growth revealed in situ by single-asperity sliding contacts. Science 348, 102–106 (2015)CrossRefGoogle Scholar
  17. 17.
    Sundararajan, G., Roy, M.: Solid particle erosion behaviour of metallic materials at room and elevated temperatures. Tribol. Int. 30, 339–359 (1997)CrossRefGoogle Scholar
  18. 18.
    Torosyan, A., Takacs, L.: Mechanochemical reaction at the interface between a metal plate and oxide powders. J. Mater. Sci. 39, 5491–5496 (2004)CrossRefGoogle Scholar
  19. 19.
    Varenberg, M.: Towards a unified classification of wear. Friction 1, 333–340 (2013)CrossRefGoogle Scholar
  20. 20.
    Vanysek, P.: Electrochemical series. http://issuu.com/time-to-wake-up/docs/electrochemical_redox_potential. Accessed June 16 2015
  21. 21.
    Calka, A., Wexler, D., Monaghan, B., Mosbah, A., Balaz, P.: Rapid reduction of copper sulfide (Cu2S) with elemental Fe and Mg using electrical discharge assisted mechanical milling (EDAMM). J. Alloy. Compd. 486, 492–496 (2009)CrossRefGoogle Scholar
  22. 22.
    Dehm, G., Medres, B., Shepeleva, L., Scheu, C., Bamberger, M., Mordike, B.L., Mordike, S., Ryk, G., Halperin, G., Etsion, I.: Microstructure and tribological properties of Ni-based claddings on Cu substrates. Wear 225, 18–26 (1999)CrossRefGoogle Scholar
  23. 23.
    Hirst, W., Hollander, A.E.: Surface finish and damage in sliding. Proc. R. Soc. Lon. Ser. A 337, 379–394 (1974)CrossRefGoogle Scholar
  24. 24.
    Greenwood, J.A., Williamson, J.B.P.: Contact of nominally flat surfaces. Proc. R. Soc. Lon. Ser. A 295, 300–319 (1966)CrossRefGoogle Scholar
  25. 25.
    Wang, Y.H., Wan, Y., Wang, W.X., Yang, S.Y.: Friction-reducing properties of stearic acid modification of the Cu2S film on the copper substrate. J. Alloy. Compd. 557, 179–183 (2013)CrossRefGoogle Scholar
  26. 26.
    Rapoport, L., Fleischer, N., Tenne, R.: Fullerene-like WS2 nanoparticles: superior lubricants for harsh conditions. Adv. Mater. 15, 651–655 (2003)CrossRefGoogle Scholar
  27. 27.
    Greenberg, R., Halperin, G., Etsion, I., Tenne, R.: The effect of WS2 nanoparticles on friction reduction in various lubrication regimes. Tribol. Lett. 17, 179–186 (2004)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.George W. Woodruff School of Mechanical EngineeringGeorgia Institute of TechnologyAtlantaUSA
  2. 2.Department of Mechanical EngineeringTechnion–Israel Institute of TechnologyHaifaIsrael
  3. 3.School of Materials Science and EngineeringGeorgia Institute of TechnologyAtlantaUSA

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