Tribofilm Explained

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 (for example produced by ZDDP-containing lubricants[7] [8]) or polymeric and non-sacrificial reaction films (for example formed by complex esters).

Notes and References

  1. Kapsa. Ph.. Martin. J.M.. Boundary lubricant films: a review. Tribology International. 15. 1. 37–42. 10.1016/0301-679x(82)90110-4. 1982.
  2. Hsu. S.M.. Gates. R.S.. Boundary lubricating films: formation and lubrication mechanism. Tribology International. 38. 3. 305–312. 10.1016/j.triboint.2004.08.021. 2005.
  3. Qu. Jun. Chi. Miaofang. Miaofang Chi. 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. Tribology Letters. en. 43. 2. 205–211. 10.1007/s11249-011-9800-z. 137805525 . 1023-8883.
  4. Nyberg. Erik. Mouzon. Johanne. Grahn. Mattias. Minami. Ichiro. 2017-04-26. Formation of Boundary Film from Ionic Liquids Enhanced by Additives. Applied Sciences. en. 7. 5. 433. 10.3390/app7050433. free.
  5. Biswas. S.K. Some mechanisms of tribofilm formation in metal/metal and ceramic/metal sliding interactions. Wear. 245. 1–2. 178–189. 10.1016/s0043-1648(00)00477-4. 2000.
  6. Morina. Ardian. Neville. Anne. Tribofilms: aspects of formation, stability and removal. Journal of Physics D: Applied Physics. 40. 18. 5476–5487. 10.1088/0022-3727/40/18/s08. 2007. 2007JPhD...40.5476M. 59488187 .
  7. Shimizu. Yasunori. Spikes. Hugh A.. 2016-12-01. The Tribofilm Formation of ZDDP Under Reciprocating Pure Sliding Conditions. Tribology Letters. en. 64. 3. 46. 10.1007/s11249-016-0776-6. 1023-8883. free. 10044/1/44451. free.
  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. Science. en. 348. 6230. 102–106. 10.1126/science.1258788. 0036-8075. 25765069. 2015Sci...348..102G. free.

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