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简介：

简介：Onthebasisofthinfilmlubricationtheory,theinfluenceoffluidfilm(disorderedfilm),orderedfilmandadsorbedfilmontribologicalbehavioroflubricatingoilinthin-filmlubrication(TFL)regimewasstudied.Theμ-L(frictioncoefficientversusload)curvesofdifferentoilviscosityandadditivedosagewereobtainedbyahighfrequencyreciprocatingtestrigandtheadsorptioncapacityofadditiveonsteelsurfaceweremeasuredbyQCM-D.BasedontheStribeckcurveandthinfilmlubricationtheorymodel,someconclusionscanbedrawnup,namely:(1)Theμ-LcurvesandtheparametersofL0andμ0,obtainedfromthehighfrequencyreciprocatingtestrigwithball-disccontact,canbeusedtostudytribologicalbehaviorsoflubricatingoilunderTFLconditions.(2)Incomparisonwiththehighviscositybasefluid,theloweronecanenterintoTFLregimeunderlowerloadandkeepsalowerfrictioncoefficientinTFLregime.(3)Thepolarmoleculesinadditiveformulationproduceorderedadsorbedlayeronsteelsurfacetoreducefrictioncoefficient.AndinTFLregime,themolecule’spolarity,layerthicknessandsaturationdegreeonsteelsurfaceprobablycaninfluencelubricant’stribologicalbehaviorsbetweenthemovinginterfaces.Moreover,thefurtherstudywouldbefocusedonthecompetitiveadsorptionofdifferentadditives,theformationofdual-and/ortri-molecularadsorptionlayers,andotheraspects.

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