Physics:Tribofilm

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Short description: Physical films that form on contact-stressed lubricated surfaces

Tribofilms (boundary lubricant films,[1] boundary lubricating films,[2] tribo-boundary films[3] or boundary films[4]) are films that form on tribologically stressed surfaces. Tribofilms are mostly solid surface films that result from a chemical reaction of lubricant components or tribological surfaces.

Tribofilms play an important role in reducing friction and wear in lubricated systems. They form as a result of complex mechanochemical interactions between surface materials and lubricants,[5] and the study of tribofilm formation processes is a major field of tribology.

Generally, a tribofilm is any film that forms in a tribosystem "as a result of interaction between chemical components of the [lubricant] with the lubricated surface".[6] The term is mostly used to describe strongly bound films that are formed on tribologically stressed surfaces, such as tribochemical reaction films[1] (for example produced by ZDDP-containing lubricants[7][8]) or polymeric and non-sacrificial reaction films (for example formed by complex esters).[1]

References

  1. ↑ 1.0 1.1 1.2 Kapsa, Ph.; Martin, J.M. (1982). "Boundary lubricant films: a review". Tribology International 15 (1): 37–42. doi:10.1016/0301-679x(82)90110-4. 
  2. ↑ Hsu, S.M.; Gates, R.S. (2005). "Boundary lubricating films: formation and lubrication mechanism". Tribology International 38 (3): 305–312. doi:10.1016/j.triboint.2004.08.021. 
  3. ↑ Qu, Jun; Chi, Miaofang; Meyer, Harry M.; Blau, Peter J.; Dai, Sheng; Luo, Huimin (2011-08-01). "Nanostructure and Composition of Tribo-Boundary Films Formed in Ionic Liquid Lubrication" (in en). Tribology Letters 43 (2): 205–211. doi:10.1007/s11249-011-9800-z. ISSN 1023-8883. 
  4. ↑ Nyberg, Erik; Mouzon, Johanne; Grahn, Mattias; Minami, Ichiro (2017-04-26). "Formation of Boundary Film from Ionic Liquids Enhanced by Additives" (in en). Applied Sciences 7 (5): 433. doi:10.3390/app7050433. http://ltu.diva-portal.org/smash/get/diva2:1092368/FULLTEXT01. 
  5. ↑ Biswas, S.K (2000). "Some mechanisms of tribofilm formation in metal/metal and ceramic/metal sliding interactions". Wear 245 (1–2): 178–189. doi:10.1016/s0043-1648(00)00477-4. 
  6. ↑ Morina, Ardian; Neville, Anne (2007). "Tribofilms: aspects of formation, stability and removal". Journal of Physics D: Applied Physics 40 (18): 5476–5487. doi:10.1088/0022-3727/40/18/s08. Bibcode: 2007JPhD...40.5476M. http://stacks.iop.org/0022-3727/40/i=18/a=S08?key=crossref.e8231a6f8ccc7542f7c56ab5acb5c00b. 
  7. ↑ Shimizu, Yasunori; Spikes, Hugh A. (2016-12-01). "The Tribofilm Formation of ZDDP Under Reciprocating Pure Sliding Conditions" (in en). Tribology Letters 64 (3): 46. doi:10.1007/s11249-016-0776-6. ISSN 1023-8883. 
  8. ↑ Gosvami, N. N.; Bares, J. A.; Mangolini, F.; Konicek, A. R.; Yablon, D. G.; Carpick, R. W. (2015-04-03). "Mechanisms of antiwear tribofilm growth revealed in situ by single-asperity sliding contacts" (in en). Science 348 (6230): 102–106. doi:10.1126/science.1258788. ISSN 0036-8075. PMID 25765069. Bibcode: 2015Sci...348..102G. http://eprints.whiterose.ac.uk/91820/1/Gosvami_Revised%20Manuscript.pdf. 



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