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Study of the Interaction of ZDDP and Dispersants Using X-ray Absorption Near Edge Structure Spectroscopy—Part 2: Tribochemical Reactions

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Abstract

The antiwear properties of zinc dialkyldithiophosphate (ZDDP), dispersants, and mixtures of ZDDP and different dispersants have been evaluated using a pin-on-flat Plint wear machine. Tribochemical interactions between ZDDP and dispersants have been investigated under boundary lubrication conditions by means of X-ray absorption near edge structure (XANES) spectroscopy, probing the phosphorus, sulfur and nitrogen absorption edges. The results show that the dispersants do not give any wear protection by themselves in the base oil. The dispersants also do not affect the antiwear property of ZDDP under the given testing conditions. The N K-edge XANES analysis indicates that dispersants contribute to the chemical composition of the tribofilms and form mixed ammonium/zinc polyphosphates. Phosphorus in the tribofilms is present mainly in the form of medium-chain polyphosphate on the surface and short-chain polyphosphate in the bulk. Sulfur appears in the tribofilms mainly as sulfide S-II, possibly zinc sulfide. The presence of dispersants in oil blends does not disturb the polyphosphate (and sulfide) formation, but it does decrease the chain length of the polyphosphate in the tribofilms.

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References

  1. D. Klamman (ed.), Lubricants and Related Products (Weinheim, Deerfield Beach, Florida, 1984) Chapter 9.

    Google Scholar 

  2. W. J. Bartz, Engine Oils and Automotive Lubrication (Marcel Dekker, New York, 1993).

    Google Scholar 

  3. F. G. Rounds, ASLE Trans. 18 (1975) 79.

    Google Scholar 

  4. H. Spedding and R. C. Watkins, Tribol. Int. 15 (1982) 9.

    Google Scholar 

  5. J. M. Martin, M. Belin, J. L. Mansot, H. Dexpert and P. Lagarde, ASLE Trans. 29 (1986) 523.

    Google Scholar 

  6. S. Jahanmir, J. Tribol. 109 (1987) 577.

    Google Scholar 

  7. W. A. Glaeser, D. Baer and M. Engelhardt, Wear 162–164 (1993) 132.

    Google Scholar 

  8. P. A. Willermet, J. M. Pieprzak, D. P. Dailey, R. O. CarterIII, N. E. Lindsay, L. P. Haack and J. E. de Vries, ASME Trans. J. Tribol. 113 (1991) 38.

    Google Scholar 

  9. P. A. Willermet, R. O. CarterIII and E. N. Boulos, Tribol. Int. 25 (1992) 371.

    Google Scholar 

  10. P. A. Willermet, D. P. Dailey, R. O. CarterIII, P. J. Schmitz and W. Zhu, Tribol. Int. 28 (1995) 177.

    Google Scholar 

  11. J. C. Bell and K. M. Delargy, in: 6th Int. Congress on Tribology “Eurotrib 93”, Budapest, 30 August-2 September 1993.

  12. Z. F. Yin, M. Kasrai, M. Fuller, G. M. Bancroft, K. Fyfe and K. H. Tan, Wear 202 (1997) 172.

    Google Scholar 

  13. M. Fuller, L. R. Fernandez, G. R. Massoumi, W. N. Lennard, M. Kasrai and G. M. Bancroft, Tribol. Lett. 8 (2000) 187.

    Google Scholar 

  14. A. M. Barnes, K. D. Bartle and V. R. A. Thibon, Tribol. Int. 34 (2001) 389.

    Google Scholar 

  15. S. S. V. Ramakumar, A. M. Rao and S. P. Srivastava, Wear 156 (1992) 101.

    Google Scholar 

  16. S. S. V. Ramakumar, N. Aggarwal, R. Madhusudhana, A. S. Sarpal, S. P. Srivastava and A. K. Bhatnagar, Lubr. Sci. 7(1) (1994) 25.

    Google Scholar 

  17. G. S. Kapur, A. Chopra, S. S. V. Ramakumar and A. S. Sarpal, Lubr. Sci. 10(4) (1998) 309.

    Google Scholar 

  18. G. S. Kapur, A. Chopra, A. S. Sarpal, S. S. V. Ramakumar and S. K. Jain, Tribol. Trans. 42(4) (1999) 807.

    Google Scholar 

  19. J. M. Martin, C. Grossiord, T. Le Mogne and J. Igarashi, Tribol. Int. 33 (2000) 453.

    Google Scholar 

  20. Z. Yin, M. Kasrai, G. M. Bancroft, K. K. Laycock, and K. H. Tan, Tribol. Int. 26(6) (1993) 383.

    Google Scholar 

  21. M. Fuller, M. Kasrai, J. S. Sheasby, G. M. Bancroft, K. Fyfe and K. H. Tan, Tribol. Lett. 1(4) (1995) 367.

    Google Scholar 

  22. M. Fuller, Z. Yin, M. Kasrai, G. M. Bancroft, E. S. Yamaguchi, P. R. Ryason, P. A. Willermet, and K. H. Tan, Tribol. Int. 30(4) (1997) 305.

    Google Scholar 

  23. M. Fuller, M. Kasrai, G. M. Bancroft, K. Fyfe, and K. H. Tan, Tribol. Int. 31(10) (1999) 627.

    Google Scholar 

  24. M. Kasrai, M. Vasiga, M. Fuller, G. M. Bancroft, and K. Fyfe, J. Synchrotron Radiat. 6(3 (1999) 719.

    PubMed  Google Scholar 

  25. M. Kasrai, R. W. Brunner, G. M. Bancroft, W. N. Lennard, J. A. Bardwell, K. H. Tan, Appl. Surf. Sci. 99(4) (1996) 303.

    Google Scholar 

  26. Z. Zhang, M. Kasrai, G. M. Bancroft and E. S. Yamaguchi. Submitted to Tribol. Lett.

  27. T. V. Liston, Lub. Eng. 48(5) (1992) 389.

    Google Scholar 

  28. S. Zhang, D. Zhao and L. Wang, Proc. of Symposium on Lubricating Materials and Tribochemistry, October 16–20, 1998, Lanzhou, P. R. China, p. 54.

  29. J. A. McGeehan, and E. S. Yamaguchi, SAE Paper No. 892112, SAE, Warrendale, PA. 1989.

  30. Z. Yin, M. Kasrai, G. M. Bancroft, K. H. Tan and X. Feng, Phys. Rev. B, 51 (1995) 742.

    Google Scholar 

  31. A. Tonck, S. Bec, J. M. Georges, R. C. Coy, J. C. Bell and G. W. Roper, Tribology Series, Vol. 36, pp. 39-47, D. Dowson et al. (Editors) (Elsevier Science B. V., 1999)

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Yamaguchi, E., Zhang, Z., Kasrai, M. et al. Study of the Interaction of ZDDP and Dispersants Using X-ray Absorption Near Edge Structure Spectroscopy—Part 2: Tribochemical Reactions. Tribology Letters 15, 385–394 (2003). https://doi.org/10.1023/B:TRIL.0000003062.91646.8f

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  • DOI: https://doi.org/10.1023/B:TRIL.0000003062.91646.8f

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