Synergistic Effects of MoDTC and ZDTP on Frictional Behaviour of Tribofilms at the Nanometer Scale

Simple item page
dc.creatorBec, Sandrine
dc.creatorTonck, André
dc.creatorGeorges, Jean-Marie
dc.creatorRoper, Glyn W.
dc.date2007-04-03
dc.date.accessioned2026-07-07T07:54:26Z
dc.date.available2026-07-07T07:54:26Z
dc.descriptionThe layered structure and the rheological properties of anti-wear films, generated in a rolling/sliding contact from lubricants containing zinc dialkyldithiophosphate (ZDTP) and/or molybdenum dialkyldithiocarbamate (MoDTC) additives, have been studied by dynamic nanoindentation experiments coupled with a simple modelling of the stiffness measurements. Local nano-friction experiments were conducted with the same device in order to determine the evolution of the friction coefficient as a function of the applied pressure for the different lubricant formulations. For the MoDTC film, the applied pressure in the friction test remains low (<0.5 GPa) and the apparent friction coefficient is high ($μ$ > 0.4). For the tribofilms containing MoDTC together with ZDTP, which permits the applied pressure to increase up to a few GPa through some accommodation process, a very low friction domain appears (0.01 < $μ$ < 0.05), located a few nanometers below the surface of the tribofilm. This low friction coefficient is attributed to the presence of MoS2 planes sliding over each other in a favourable configuration obtained when the pressure is sufficiently high, which is made possible by the presence of ZDTP.
dc.identifierhttps://arxiv.org/abs/0704.0338
dc.identifierhttp://arxiv.org/abs/0704.0338
dc.identifierTribology Letters 4 (2004) 797-809
dc.identifierdoi:10.1007/s11249-004-8088-7
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/126607
dc.subjectMaterials Science
dc.titleSynergistic Effects of MoDTC and ZDTP on Frictional Behaviour of Tribofilms at the Nanometer Scale
dc.typetext

Files

Collections

arXiv