含碳化鎢硬相鎳基涂層耐磨粒磨損性能研究Title:StudyonWearResistanceofCarbideTungstenHardPhaseNickel-basedCoatingsunderAbrasiveParticleAbrasion

Abstract:

Nickel-basedcoatingsreinforcedwithcarbidetungstenhardphasehavebeenwidelyusedinvariousindustriesduetotheirexcellentwearresistance.However,thewearresistanceofthesecoatingsunderabrasiveparticleabrasionhasnotbeenfullyinvestigated.Inthisstudy,thewearresistanceofcarbidetungstenhardphasenickel-basedcoatingsunderabrasiveparticleabrasionwassystematicallyinvestigatedbyaseriesofweartests.Theresultsshowthatthecarbidetungstenhardphasenickel-basedcoatingsexhibitexcellentwearresistanceunderabrasiveparticleabrasion,andthewearresistanceperformanceisaffectedbyseveralfactors,suchasparticlesize,load,andvelocity.

Introduction:

Withtherapiddevelopmentofindustry,variousmachineryandequipmentarewidelyusedindifferentfields,andtheissueofwearandtearhasbecomemoreandmoreprominent.Nickel-basedcoatingsreinforcedwithcarbidetungstenhardphasehaveemergedasapromisingtechnologyforenhancingthewearresistanceofvariousmaterials.Thecarbidetungstenhardphasenickel-basedcoatingshavesuperiormechanicalproperties,includingexcellenthardness,toughness,andwearresistance,makingthemidealforuseinharshenvironments.However,theeffectsofabrasiveparticleabrasiononthewearresistanceofthesecoatingshavenotbeenfullyinvestigated.Thus,thisstudyaimstoinvestigatethewearresistanceofcarbidetungstenhardphasenickel-basedcoatingsunderabrasiveparticleabrasionandexplorethefactorsaffectingthewearresistanceperformance.

Experimentalmethod:

Thecarbidetungstenhardphasenickel-basedcoatingswerepreparedbythermalsprayingtechnology,andthemicrostructureofthecoatingswasobservedbyscanningelectronmicroscopy.Theweartestswereconductedbyareciprocatingweartester,andtheabrasiveparticlesusedweresiliconcarbideparticleswithdifferentsizes(80#,120#,and220#).Thetestconditionswerevariedintermsofload,velocity,andduration.

Resultsanddiscussion:

Theexperimentalresultsshowthatthecarbidetungstenhardphasenickel-basedcoatingshaveexcellentwearresistanceunderabrasiveparticleabrasion.Thecoatingsexhibitalowwearrateandhighwearresistance.Thewearratedecreaseswiththeincreaseoftheparticlesizeduetothelargerparticleshavinglowerabrasionenergy.Thewearratealsoincreaseswiththeincreaseoftheloadandvelocity,whichisattributedtotheincreasedcontactstressandfrictionalforcebetweentheparticlesandthecoatings.Itisfoundthatthewearresistanceofthecoatingsisimprovedwithincreasedduration.Thismaybeduetotheformationofaprotectiveoxidefilmonthesurfaceofthecoatingsovertime,whichcaneffectivelyreducetheabrasivewear.

Conclusion:

Thewearresistanceofcarbidetungstenhardphasenickel-basedcoatingsunderabrasiveparticleabrasionwasstudiedinthispaper.Theresultsshowthatthecarbidetungstenhardphasenickel-basedcoatingsexhibitexcellentwearresistanceunderabrasiveparticleabrasion.Thewearresistanceperformanceofthecoatingsisaffectedbyseveralfactors,includingparticlesize,load,velocity,andduration.Thefindingsofthisstudyprovideatheoreticalbasisfortheapplicationofcarbidetungstenhardphasenickel-basedcoatingsinharshenvironmentswithabrasivewearconditions.Inaddition,themicrostructureofthecoatingsaffectstheirwearresistanceperformance.Thecarbidetungstenhardphaseinthecoatingscaneffectivelyreducethedeformationandwearofthecoatingsunderabrasiveparticleabrasion.Thebondingstrengthbetweenthecoatingsandthesubstratealsoplaysacriticalroleinthewearresistanceofthecoatings.Astrongbondinginterfacecanensurethecoatingsremainstableandintactunderabrasiveparticleabrasion.

Furthermore,itisimportanttonotethatthepropertiesoftheabrasiveparticlesalsoaffectthewearresistanceofthecoatings.Differenttypesofabrasiveparticlesmayhavedifferentcuttingabilityandwearmechanisms,therebyimpactingthewearbehaviorofthecoatings.Therefore,itisessentialtochoosesuitableabrasiveparticlesbasedonthespecificworkingconditions.

Insummary,thewearresistanceofcarbidetungstenhardphasenickel-basedcoatingsunderabrasiveparticleabrasionwassystematicallyinvestigatedinthisstudy.Theresultsrevealthatthesecoatingshaveexcellentwearresistance,andtheirwearresistanceperformanceisaffectedbyvariousfactors.Thefindingsofthisstudyprovidevaluableinsightsforthedesignandapplicationofcarbidetungstenhardphasenickel-basedcoatingstoimprovethewearresistanceofmaterialsinharshenvironmentswithabrasivewearconditions.Furtherresearchisneededtooptimizethecoatingstructureanddevelopbettercoatingformulationsforspecificapplications.Additionally,theoperatingconditionsoftheequipmentandtheenvironmentalfactors,includingtemperatureandhumidity,alsoimpactthewearresistanceperformanceofthecoatings.Hightemperaturesmaycausethecoatingstooxidize,leadingtochippingorflaking.Ontheotherhand,highhumiditymaypromotecorrosioninthecoatings,leadingtoareductionintheirwearresistance.

Moreover,thethicknessofthecoatingsalsoaffectstheirwearresistance,withthickercoatingsgenerallyprovidingbetterprotectionagainstwear.However,excessivecoatingthicknessmaycreatestressconcentration,leadingtodelaminationandreducedwearresistance.Therefore,itisimportanttofindanoptimalcoatingthicknessthatbalanceswearresistanceandadhesionstrength.

Finally,thecoatingdepositionmethodisalsoacriticalfactoraffectingthewearresistanceofthecoatings.Differentdepositionmethods,suchasplasmasprayingandelectro-sparkdeposition,canproducecoatingswithvaryingmicrostructuresandproperties,leadingtodifferencesinwearresistanceperformance.

Inconclusion,thewearresistanceofcarbidetungstenhardphasenickel-basedcoatingsunderabrasiveparticleabrasionisaffectedbyvariousfactors,includingthemicrostructureofthecoatings,bondingstrength,abrasiveparticleproperties,operatingconditions,coatingthickness,anddepositionmethod.Thedevelopmentofadvancedcarbidetungstenhardphasenickel-basedcoatingsthatcanwithstandseverewearenvironmentswillrequireacomprehensiveunderstandingofthesefactorsandtheirinteractions.Thisknowledgecanalsobeappliedtoothermaterialsystemdevelopmentsanddevelopmentsinsurfaceengineering.Furthermore,optimizationofthecarbidetungstenhardphasenickel-basedcoatingscanbeachievedthroughtheuseofadditives,suchasrareearthelementsornanoscalereinforcements,whichcanenhancethewearresistancebyimprovingthebondingstrength,reducingporosity,andincreasingthehardnessofthecoating.Theseadditivescanalsomodifythemicrostructureofthecoatings,leadingtosuperiorwearperformance.

Surfacetreatments,suchasshotpeening,canalsobeusedtoimprovethewearresistanceofthecoatingsbyinducingcompressiveresidualstressesinthesurfacelayer.Thiscanpreventcrackinitiationandpropagation,leadingtoimprovedwearperformance.

Inaddition,designingcoatingswithamultilayer,gradedcompositioncanprovideenhancedwearresistanceperformanceundersevereoperatingconditions,suchashightemperatureandcorrosiveenvironments.Theuseofsuchcoatingscanminimizethe