Journal of Friction and Wear

, Volume 38, Issue 5, pp 349–354 | Cite as

Improving the lubricating properties of 10W40 oil using oxidized graphite additives

  • N. Kumar
  • A. T. KozakovEmail author
  • V. I. Kolesnikov
  • A. V. Sidashov


Improving the tribological properties of mineral oils is necessary for energy conservation and enhancing machine efficiency. The antifriction and antiwear properties of 10W40 oil were significantly improved by the addition of small amounts of oxidized graphite flakes. According to the X-ray photoelectron spectroscopy (XPS), this improvement was related to the oxidation of ultrasonicated graphite flakes in an ambient atmosphere accompanied by the adsorption of oxygenated compounds. The oxidation induces the defects which modify the chemical structure in an sp 2 graphite lattice. The dispersion stability of graphite flakes increased in 10W40 oil due to their structural defects and adsorbed oxygen functional groups. This was found to be the main reason behind the improvement of the lubricating properties of graphite flake additives. The formation of transfer films of the graphite structure on the sliding interfaces was shown by the micro-Raman spectroscopy, which explained the improvement of the antifriction and antiwear properties of the mixture by the mechanical reasons.


oxidized graphite tribological properties antifriction properties mineral oils transfer films micro-Raman spectroscopy X-ray photoelectron spectroscopy 


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  1. 1.
    Myshkin, N.K. and Goryacheva, I.G., Tribology: trends in the half-century development, J. Frict. Wear, 2016, vol. 37, no. 6, pp. 513–516.CrossRefGoogle Scholar
  2. 2.
    Grigoriev, A.Ya., Kovaleva, I.N., and Myshkin, N.K., Friction of brush-like self-assembled monomolecular coatings, J. Frict. Wear, 2008, vol. 29, no. 6, pp. 434–440.CrossRefGoogle Scholar
  3. 3.
    Krasnov, A.P., Naumkin, A.V., Yudin, A.S., Solov’eva, V.A., Afonicheva, O.V., Buyaev, D.I., Tikhonov, N.N., Nature of initial acts of friction of ultrahigh molecular weight polyethylene with steel surface, J. Frict. Wear, 2013, vol. 34, no. 2, pp. 120–128.CrossRefGoogle Scholar
  4. 4.
    Mungse, H.P., Kumar, N., and Khatri, O.P., Synthesis, dispersion and lubrication potential of basal plane functionalized alkylated graphene nanosheets, RSC Adv., 2015, vol. 5, pp. 25565–25571.CrossRefGoogle Scholar
  5. 5.
    Bhavana, G., Panda, K., Kumar, N., Melvin, A.A., Dash, S., and Tyagi, A.K., Chemically grafted graphite nanosheets dispersed in poly(ethylene-glycol) by γ-radiolysis for enhanced lubrication, RSC Adv., 2015, vol. 5, pp. 53766–53775.CrossRefGoogle Scholar
  6. 6.
    Ferrari, A.C. and Robertson, J., Interpretation of Raman spectra of disordered and amorphous carbon, Phys. Rev. B, 2000, vol. 61, pp. 14095–14107.ADSCrossRefGoogle Scholar
  7. 7.
    Dongxing, Y., Aruna, V., Gulay, B., Sungjin, P., Meryl, S., Piner, R.D., Stankovich, S., Jung, I., Field, D.A., Jr., Ventrice, C.A., and Ruoff, R.S., Chemical analysis of graphene oxide films after heat and chemical treatments by X-ray photoelectron and micro-Raman spectroscopy, Carbon, 2009, vol. 47, no. 1, pp. 145–152.CrossRefGoogle Scholar
  8. 8.
    Gorbunov, D.A., Adhesion interaction on the contact at graphite friction, Cand. Sci. (Phys.-Math.) Dissertation, Moscow: State Inst. Graphite-Based Constr. Mater., 1981.Google Scholar
  9. 9.
    Lin, J., Wang, L., and Chen, G., Modification of graphene platelets and their tribological properties as a lubricant additive, Tribol. Lett., 2011, vol. 41, no. 1, pp. 209–215.CrossRefGoogle Scholar
  10. 10.
    Bhavana, G., Kumar, N., Kozakov, A.T., Kolesnikov, V.I., Sidashov, A.V., and Dash, S., Lubrication properties of chemically aged reduced graphene-oxide additives, Surf. Interfaces, 2017, vol. 7, pp. 6–13.CrossRefGoogle Scholar

Copyright information

© Allerton Press, Inc. 2017

Authors and Affiliations

  • N. Kumar
    • 1
  • A. T. Kozakov
    • 2
    Email author
  • V. I. Kolesnikov
    • 3
  • A. V. Sidashov
    • 3
  1. 1.Indira Gandhi Centre for Atomic ResearchKalpakkamIndia
  2. 2.Research Institute of PhysicsSouthern Federal UniversityRostov-on-DonRussia
  3. 3.Rostov State Transport UniversityRostov-on-DonRussia

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