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1、AppliedSurfaceScience253(2006)1282–1286www.elsevier.com/locate/apsuscOptimizationofthesurfacetextureforsiliconcarbideslidinginwaterXiaoleiWanga,b,*,KoshiAdachia,KatsunoriOtsukaa,c,KojiKatoaaLaboratoryofTribology,SchoolofMechanicalEngineering,TohokuUniver
2、sity,Sendai980-8579,JapanbCollegeofMechanicalandElectricalEngineering,NanjingUniversityofAeronauticsandAstronautics,Nanjing210016,ChinacKoyoSeikoCo.,Ltd.,24-1Kokubu,Higanjo-cho,Kashiwara582-8588,JapanReceived5December2005;receivedinrevisedform28January20
3、06;accepted31January2006Availableonline9March2006AbstractSurfacetexturinghasbeenrecognizedasaneffectivemeanstoimprovethetribologicalperformancesofslidingsurfaces.Usually,generationadditionalhydrodynamicpressuretoincreasetheloadcarryingcapacityisregardeda
4、sthemostsigni?canteffectofsurfacetexture.Inthecaseofsiliconcarbideslidingagainstidenticalmaterialinwater,theexperimentalresultsindicatethatsurfacetextureisalsohelpfultoimprovetherunning-inprogresstosmooththecontactsurfaces,showinganotherreasontoresultinl
5、owfriction.Basedontheconsiderationofenhancingthegenerationofhydrodynamicpressureandimprovingrunning-inprogress,asurfacetexturepattern,whichwascombinedwithlarge(circle,350mmindiameter)andsmall(rectangular,40mminlength)dimples,wasdesignedtomaximizethetextu
6、reeffectontheloadcarryingcapacityofSiCsurfacesslidinginwater.Thefrictioncoef?cientofsuchtexturedsurfacewasevaluatedandcomparedwiththatofuntexturedandthoseonlywithlargeorsmalldimplesonly.Thefrictionreductionmechanismsofthepatternswithdifferentdimplesinsiz
7、earediscussed.#2006ElsevierB.V.Allrightsreserved.PACS:81.40.Pq;46.55.td;06.60.Vz;47.85.DhKeywords:Surfacetexturing;SiC;Waterlubrication;Running-in1.IntroductionGenerally,togenerateadditionalhydrodynamicpressureisconsideredasthemostsigni?canteffectofsurfa
8、cetextureThesurfacetexture,suchasarti?cialmicro-groovesorunderfull?uidlubricationcondition,sothatithasattractedmicro-dimplesfabricatedonthecontactsurfaceshasproventomuchmorefocusinghistoricallyandpresently[15,16].Thebeeffe
