Full Film, Boundary Lubrication and Tribochemistry in Steel Circular Contacts Lubricated with Glycerol

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dc.contributor.author Habchi, W.
dc.contributor.author Matta, C.
dc.contributor.author Joly-Pottuz, L.
dc.contributor.author De Barros, M.I.
dc.contributor.author Martin, J.M.
dc.contributor.author Vergne, P.
dc.date.accessioned 2015-09-21T10:35:44Z
dc.date.available 2015-09-21T10:35:44Z
dc.date.issued 2015-09-21
dc.identifier.issn 1023-8883 en_US
dc.identifier.uri http://hdl.handle.net/10725/2184
dc.description.abstract In this article, the lubricating properties of pure glycerol are investigated under both mild and severe EHL regimes. Amazingly low friction coefficients (about 0.01) are reported by experiments in thick film regimes compared to traditional base oils. EHL calculations of film thickness and friction (including thermal effects) predict friction coefficients that are twice those actually found for glycerol. Chemical analysis of glycerol before and after the friction tests were performed by NMR and Karl Fischer methods, and they reveal that water is produced by tribochemical reaction as well as other species like aldehydes. This finding is in agreement with a corrosion pattern observed inside the wear scars of the steel samples. This study provides an explanation to the anomalously low friction observed in the thick film regime. In fact, water produced in the lubricant decreases traction forces due to the drastic decrease of the viscosity of glycerol with water addition. en_US
dc.language.iso en en_US
dc.title Full Film, Boundary Lubrication and Tribochemistry in Steel Circular Contacts Lubricated with Glycerol 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 Mechanical Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal Tribology Letters en_US
dc.journal.volume 42 en_US
dc.article.pages 351-358 en_US
dc.keywords Glycerol en_US
dc.keywords EHL lubrication en_US
dc.keywords Tribochemistry en_US
dc.keywords Water lubrication en_US
dc.identifier.doi http://dx.doi.org/10.​1007/​s11249-011-9778-6 en_US
dc.identifier.ctation Habchi, W., Matta, C., Joly-Pottuz, L., De Barros, M. I., Martin, J. M., & Vergne, P. (2011). Full film, boundary lubrication and tribochemistry in steel circular contacts lubricated with glycerol. Tribology Letters, 42(3), 351-358. en_US
dc.author.email wassim.habchi@lau.edu.lb
dc.identifier.url http://link.springer.com/article/10.1007/s11249-011-9778-6

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