Friction mechanisms at the micro-scale

Contact between macroscopic surfaces occurs on asperities and local nano-/micro-scale asperity interactions govern macroscopic tribological behavior. Tribological phenomena like friction and wear are highly scale dependent. Friction measurement carried out in the range of micro-/milli-Newton loads a...

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Bibliographic Details
Published in:Tribology international 2009-12, Vol.42 (11), p.1792-1799
Main Authors: Achanta, S., Liskiewicz, T., Drees, D., Celis, J.-P.
Format: Article
Language:English
Subjects:
Adhesion
Applied sciences
Atomic force microscopy
Exact sciences and technology
Friction measurement
Friction, wear, lubrication
Machine components
Mechanical engineering. Machine design
Micro-/nano-scale friction
Micro-wear
Surface topography
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Summary:Contact between macroscopic surfaces occurs on asperities and local nano-/micro-scale asperity interactions govern macroscopic tribological behavior. Tribological phenomena like friction and wear are highly scale dependent. Friction measurement carried out in the range of micro-/milli-Newton loads are gaining prominence in the tribological research as they are bridging the gap between classical macro-scale tests and high precision nano-scale experiments. In this paper, recent advancements in micro-scale domain are discussed and compared with the existing macro- and nano-scale friction research. There exists a striking similarity between micro- and nano-scale frictional behavior of various materials and dependence of friction on capillary forces, surface topography, and phase composition of mated materials. Micro-tribological experiments not only offer precision and sensitivity of nano-scale (or LFM) measurements, but also give reliable information due to its multiple asperity contact configuration.
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2009.04.018