DCP法WZrC金属陶瓷的激光烧蚀行为研究（英文）

DCP法WZrC金属陶瓷的激光烧蚀行为研究（英文）Title:StudyontheLaserAblationBehaviorofDCP-WZrCMetalCeramicAbstract:ThelaserablationbehaviorofDCP-WZrCmetalceramicwasinvestigatedinthisstudy.DCP-WZrCisauniquematerialthatexhibitsbothmetallicandceramicproperties,makingitsuitableforvarioushigh-temperatureapplications.TheaimofthisresearchwastounderstandtheresponseofDCP-WZrCtolaserirradiationanddeterminethefactorsinfluencingitsablationbehavior.Laserablationexperimentswereconductedusingapulsedlasertoevaluatethematerialremovalrate,ablationdepth,andsurfaceroughness.Theeffectsoflaserpower,pulseduration,andrepetitionratewerestudied,andtheresultingablationmechanismswereanalyzed.ThefindingsofthisresearchwillcontributetoadeeperunderstandingofthelaserablationbehaviorofDCP-WZrCandprovidevaluableinsightsforitsoptimizationinpracticalapplications.1.IntroductionDCP-WZrCisacompositematerialcomposedoftungstencarbide(WC)andzirconiumcarbide(ZrC)withuniquemechanicalandthermalproperties.Itexhibitsexcellentwearresistance,highthermalconductivity,andgoodmechanicalstabilityatelevatedtemperatures.Duetotheseexceptionalproperties,DCP-WZrChasfoundapplicationsinvariousfields,includingaerospace,nuclearpower,andhigh-temperatureenvironments.However,itsresponsetolaserablationhasyettobefullyunderstood.ThisstudyaimstofillthisknowledgegapbyinvestigatingthelaserablationbehaviorofDCP-WZrC.2.ExperimentalProcedure2.1MaterialPreparationDCP-WZrCsampleswerepreparedthroughapowdermetallurgyrouteusingasparkplasmasinteringmethod.Thedetailedprocessparametersaredescribedelsewhere[reference].2.2LaserAblationExperimentsLaserablationexperimentswerecarriedoutusingapulsedlaserablationsystem.Thelaserparameters,includingpower,pulseduration,andrepetitionrate,werevariedtoinvestigatetheirinfluenceontheablationbehaviorofDCP-WZrC.Thematerialremovalrate,ablationdepth,andsurfaceroughnessweremeasuredandrecorded.Themorphologyofthelaser-ablatedsurfacewasexaminedusingscanningelectronmicroscopy(SEM)toanalyzetheablationmechanism.3.ResultsandDiscussion3.1EffectofLaserPowerThelaserpowerhasasignificantimpactontheablationbehaviorofDCP-WZrC.Asthelaserpowerincreases,thematerialremovalrateandablationdepthincreasenonlinearly.However,beyondacertainthreshold,excessivelaserpowerleadstoadecreaseinmaterialremovalefficiencyandanincreaseinthermaldamagetothesurroundingmaterial.3.2EffectofPulseDurationThepulsedurationalsoplaysacrucialroleinlaserablation.Shortpulsedurationsresultinhigherpeakpowers,leadingtoenhancedmaterialremovalrates.However,excessivelyshortpulsedurationsgeneratemoreheat,leadingtoincreasedthermaldamageandsurfaceroughness.Optimalpulsedurationsneedtobeidentifiedforachievingthedesiredablationcharacteristics.3.3EffectofRepetitionRateTherepetitionrateinfluencestheheataccumulationanddissipationduringlaserablation.Lowerrepetitionratesallowmoretimeforheatdissipation,leadingtolessthermaldamageandimprovedsurfacequality.However,toolowrepetitionratesleadtolongerprocessingtimes,whichmaynotbesuitableforpracticalapplications.Therefore,findingthebalancebetweenrepetitionrateandablationefficiencyisessential.4.ConclusionThelaserablationbehaviorofDCP-WZrCmetalceramicwasinvestigatedinthisstudy.Theeffectsoflaserpower,pulseduration,andrepetitionrateonthematerialremovalrate,ablationdepth,andsurfaceroughnesswerestudied.Thefindingsindicatethatbothlaserpowerandpulsedurationhaveasignificantinfluenceontheablationbehavior,withtheneedtoidentifyoptimalparametersforachievingdesirableoutcomes.Additionally,therepetitionratewasfoundtoaffecttheheatdissipationandsurfacequality.ThisstudyprovidesvaluableinsightsintothelaserablationbehaviorofDCP-WZrCandcontributestoitsoptimizationinpracticalapplications.Acknowledgments:Specialthanksto[institut