45-钢表面激光织构化及其干摩擦特性研究-胡天昌

30　1Vol.30　No.120101TribologyJan.,201045#胡天昌1,2,胡丽天1＊,丁　奇1,2(1.,　730000;2.,　100039)　:Nd:YAG45#;;.:45#.,,,..:45#;;;:TH117.3:A:1004-0595(2010)01-0046-06TribologicalPropertiesofLaserTexturedSurfacesof45#SteelunderDryFrictionHUTian-chang1,2,HULi-tian1＊,DINGQi1,2(1.StateKeyLaboratoryofSolidLubrication,LanzhouInstituteofChemicalPhysics,ChineseAcademyofSciences,Lanzhou730000,China2.GraduateSchoolofChineseAcademyofSciences,Beijing100039,China)Abstract:Thesurfacetextureson45#steelwereproducedwithaQswitchedsolid-stateNd:YAGlaser.Frictiontestswereperformedusingapin-on-diskapparatus.Theeffectofmicro-texturingunderdryfrictionwasanalyzed.Themorphologiesofthetextureandwearscarofthesampleswereobservedusinga3Dprofilerandscanningelectronmicroscopy.Theresultshowedthattheregularmicro-dimpletexturewasproducedonthesurfaceof45#steelbylaser.Laser-texturedspecimensexhibitedlowerandstablefrictioncoefficientascomparedwithuntexturedspecimensunderdryfriction.Thetexturedsurfacesalsoexhibitedlowerwearratethanthatofuntexturedspecimens.Itwasfoundthatmicro-dimplesactedastrapsforweardebris,andhencedecreasedabrasivewear.Theeffectsofdimpleareadensityanddimplediameteronthetribologicalpropertieswerealsoinvestigated.Itwasfoundthatlargerdimpleareadensityandlargerdimplediameterwereinfavoroffriction-reductionandwearresistance.Keywords:45#steel,lasertextured,dryfriction　　,.,,.,[1-5],.、.,[6-7]、[8～11]、Received17July2009,revised16November2009,accepted1December2009,availableonline28January2010.＊Correspondingauthor.Tel.:[phone],E-mailaddress:[e-mail][12-13],,、、.,45#,45#.45#,,.1　1.1　45#,25mm×8mm,Ra0.05μm,MH-5-VMHV100260.,,.QNd:YAG,1064nm,10W,5～25ns.10kHz,5mm/s..HV100260,,..1.1　Table1　Patternshape,size,depth,anddimplesareadensityforthetexturedsamplesShapeDiameterD/μmDimplesareadensity,ε/%Depth/μmDimple10014,23,3314～1620014,23,3330014,23,33MicroXAMInterferometricSurfaceProfile1,,.1.2　CSEM,.5mm×20mm45#,Ra0.05μm.45#.,,2～10N,10～40cm/s,100m,3.(SEM).2　2.1　2～42N5N.24,2N,20cm/s,,,300μm1040cm/s14%41%,3,34%.5N,,,,1040cm/s300μm26%16%,54%17%.24471,:45#30～40cm/s.10N,2.,,,,,.2.2　.4:2N,100μm,;200μm,33%2;48　　　　30300μm,33%.5N,(23%、33%),200μm,33%.,,,,,,,.2N120μm,.,,.2.3　5,.,,300μm,,491,:45#.,,,.4,.2.4　62N,20cm/s.,,,,,.,,,.,.7,,,,.50　　　　30511,:45#3　a.　45#.b.　,2N5N,45#,,,.c.　2N5N,,.,..4　(50575218),.:[1]　TianH,SakaN,SuhNP.Boundarylubricationstudiesofundulatedtitaniumsurfaces[J].TribolTrans,1989,32:289-96.[2]　ARonen,IEtsion,YKligerman.Friction-reducingsurface-texturinginreciprocatingautomotivecomponents[J].TribolTrans,2001,45:359-366.[3]　XiaoleiWang,KoshiAdachi,KatsunoriOtsuka,KojiKato.Optimizationofthesurfacetextureforsiliconcarbideslidinginwater[J].AppliedSurfaceScience,2006,253(3):1282-1286.[4]　SiripuramR,StephensLS.Effectofdeterministicasperitygeometryonhydrodynamiclubrication[J].JTribol,2004,126(7):5276-5341.[5]　WanY,XiongDS.Studyoflasersurfacetexturingforimprovingtribologicalproperties[J].Tribology,2006,26(6):603-607(inChinese)[,.[J].,2006,26(6):603-607].[6]　VPBlatov,VAKrasny,YGSchneider.Basicsofmachiningmethodstoyieldwearandfretting-resistivesurfaces,havingregularroughnesspatterns[J].Wear,1997,208:132-137.[7]　MikiNakano,AtsukoKorenaga,etal.Applyingmicro-texturetocastironsurfacestoreducethefrictioncoefficientunderlubricatedconditions[J].TribolLett,2007,28:131-137.[8]　WangX,KatoK.Improvingtheanti-seizureabilityofSiCsealinwaterwithRIEtexturing[J].TribolLett,2003,14(4):275-280.[9]　KovalchenkoA,AjayiO,ErdemirA,etal.Theeffectoflasertexturingofsteelsurfacesandspeed-loadparametersonthetransitionoflubricationregimefromboundarytohydrodynamic[J].TribologyTransactions,2004,47(2):299-307.[10]　IEtsion.Stateoftheartinlasersurfacetexturing[J].JournalofTribology,2005,127:248-253.[11]　LiuDL,MengXX,YuanCJ,etal.Researchontribologicalperformanceoftexturingsurfaces[J].LubricationEngineering,2008,33(7):28-31(inChinese)[,,,.[J].,2008,33(7):28-31].[12]　HLCosta,IMHutchings.Hydrodynamiclubricationoftexturedsteelsurfacesunderreciprocatingslidingconditions[J].TribologyInternational,2007,(40):1227-1238.[13]　RenJR,ZhaoDJ,CaiYH,etal.Frictionbehaviorofmicro-scaledimplepatternundermixedandhydrodynamiclubricationcondition[J].Tribology,2008,28(3):198-202(inChinese)[,,,.[J].,2008,28(3):198-202].52　　　　30