Friction Reduction in Elastohydrodynamic Contacts by Thin Layer Thermal Insulation

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dc.contributor.author Björling, M.
dc.contributor.author Habchi, W.
dc.contributor.author Bair, S.
dc.contributor.author Larsson, L.
dc.contributor.author Marklund, P.
dc.date.accessioned 2015-09-21T07:12:23Z
dc.date.available 2015-09-21T07:12:23Z
dc.date.copyright 2014
dc.date.issued 2015-09-21
dc.identifier.issn 1023-8883 en_US
dc.identifier.uri http://hdl.handle.net/10725/2175
dc.description.abstract Reducing friction is of utmost importance to improve efficiency and lifetime of many products used in our daily lives. Thin hard coatings like diamond-like carbon (DLC) have been shown to reduce friction in full-film-lubricated contacts. In this work, it is shown that contrarily to common belief, the friction reduction stems mainly from a thermal phenomenon and not only a chemical/surface interaction one. It is shown that a few micrometer-thin DLC coating can significantly influence the thermal behavior in a lubricated mechanical system. The presented simulations, validated by experiments, show that applying a thin DLC coating to metal surfaces creates an insulating effect that due to the increased liquid lubricant film temperature at the center of the contact, locally reduces lubricant viscosity and thus friction. The results of the investigation show that the addition of thin insulating layers could lead to substantial performance increases in many applications. On a component level, the contact friction coefficient in some common machine components like gears, rolling element bearings, and cam followers can potentially be reduced by more than 40 %. This will most likely open up the way to new families of coatings with a focus on thermal properties that may be both cheaper and more suitable in certain applications than DLC coatings. en_US
dc.language.iso en en_US
dc.title Friction Reduction in Elastohydrodynamic Contacts by Thin Layer Thermal Insulation en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SOE en_US
dc.author.idnumber 200804200
dc.author.woa N/A en_US
dc.author.department Industrial And Mechanical Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal Tribology Letters en_US
dc.journal.volume 53 en_US
dc.journal.issue 2
dc.article.pages 477-486 en_US
dc.keywords Diamond-like carbon (DLC) en_US
dc.keywords EHL en_US
dc.keywords Insulation en_US
dc.keywords Friction en_US
dc.keywords Coating en_US
dc.keywords Thermal effects en_US
dc.keywords Ball-on-disk en_US
dc.identifier.doi https://dx.doi.org/10.1007/s11249-013-0286-8 en_US
dc.identifier.ctation Björling, M., Habchi, W., Bair, S., Larsson, R., & Marklund, P. (2014). Friction reduction in elastohydrodynamic contacts by thin-layer thermal insulation. Tribology Letters, 53(2), 477-486. en_US
dc.author.email wassim.habchi@lau.edu.lb
dc.identifier.url http://link.springer.com/article/10.1007/s11249-013-0286-8
dc.note This original version contained a mistake and the correction to this mistake is published in Tribology Letters (2018) 66 (125). https://link.springer.com/article/10.1007/s11249-018-1079-x en_US

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