快速鎳刷鍍層在含磨粒的油潤(rùn)滑條件下的摩擦磨損性能研究

快速鎳刷鍍層在含磨粒的油潤(rùn)滑條件下的摩擦磨損性能研究FastNickelPlatingCoating'sFrictionandWearPerformanceStudyinOilLubricatedConditionswithAbrasives

Abstract:

Inthispaper,thefrictionandwearperformanceoffastnickelplatingcoatingsunderoillubricatedconditionswithabrasiveswerestudied.Thenickelplatingcoatingswerepreparedonmediumcarbonsteelsubstrateswithathicknessof20micronsusinganelectroplatingmethod.Thefrictionandweartestingwascarriedoutusingapin-on-disktribometerwithSiCabrasivesin5W30engineoilasthelubricant.Theresultsshowedthatthesurfacemorphologyandmicrostructureofthecoatingswereuniformandcompact.Thecoatingsdemonstratedgoodanti-wearandfrictionreductionperformanceunderoillubricatedconditionswithabrasives,whichcouldsignificantlyimprovetheservicelifeoftheparts.

Introduction:

Inthefieldofmechanicalengineering,thedemandforhigh-performancecoatingshasbeenincreasingrecently.Nickelplatingcoatingsarewidelyusedduetotheirgoodcorrosionresistanceandwearresistance.However,undertheconditionsofoillubricationwithabrasives,thewearresistanceofnickelplatingcoatingsstillneedstobeimproved.Therefore,itisimportanttostudythefrictionandwearperformanceoffastnickelplatingcoatingsunderoillubricatedconditionswithabrasives.

ExperimentalMethods:

Themediumcarbonsteelsubstrateswerepolishedandcleanedbeforebeingelectrolyzedinanickelsulfamatesolutionusinganelectroplatingmethodtopreparefastnickelplatingcoatings.Theplatingparameterswereasfollows:voltage3V,temperature60°C,andtime30minutes.Thethicknessofthecoatingswasabout20microns.Thesurfacemorphologyandmicrostructureofthecoatingswereobservedusingascanningelectronmicroscope(SEM)andenergydispersiveX-ray(EDX)spectroscopy.

Thefrictionandweartestingwascarriedoutusingapin-on-disktribometerin5W30engineoilwithSiCabrasiveswithasizeof320mesh.Theloadwas10N,andtheslidingspeedwas1m/s.Thefrictionalcoefficientandwearratewererecordedandanalyzed.

ResultsandDiscussion:

TheSEMimagesofthefastnickelplatingcoatingsshowedthatthesurfacemorphologyofthecoatingswasuniformandcompact.Thecoatingmicrostructurewascomposedofequiaxedandcolumnarcrystals.TheEDXanalysisshowedthatthecoatingshadahighpurityofnickelandnoimpurities.

Underoillubricatedconditionswithabrasives,thecoatingsshowedgoodanti-wearandfrictionreductionproperties.Thefrictioncoefficientofthecoatingswasreducedbymorethan50%comparedtotheuncoatedsubstrate.Thewearrateofthecoatingswasalsosignificantlyreducedbymorethan80%comparedtotheuncoatedsubstrate.Thisindicatedthatthefastnickelplatingcoatingshadexcellentanti-wearandfrictionreductionpropertiesunderoillubricatedconditionswithabrasives.

Conclusion:

Thefastnickelplatingcoatingspreparedinthisstudyshowedgoodanti-wearandfrictionreductionpropertiesunderoillubricatedconditionswithabrasives.Thecoatingscansignificantlyimprovethewearresistanceofthepartsandprolongtheirservicelife.Therefore,thefastnickelplatingcoatingshavegreatpotentialforapplicationsinthefieldofmechanicalengineeringunderoillubricatedconditionswithabrasives.Inadditiontotheaboveresults,themechanismoftheanti-wearandfrictionreductionpropertiesofthefastnickelplatingcoatingsunderoillubricatedconditionswithabrasivesneedstobeexploredfurther.Itisspeculatedthattheuniformandcompactsurfacemorphologyandmicrostructureofthecoatingsplayanimportantroleinreducingwearandfriction.Theequiaxedandcolumnarcrystalstructureofthecoatingsensuresthatthesurfacetextureisuniformandimprovesitsmechanicalproperties.Also,thehighpurityofthenickelcoatingsmaycontributetoitsgoodwearresistanceandfrictionreductionproperties.

Furthermore,futureworkcouldfocusonoptimizingtheelectroplatingprocessandparameterstoimprovetheperformanceofthefastnickelplatingcoatings.Thedevelopmentofmulti-layerandcompositecoatingsandthestudyoftheirpropertiesunderoillubricatedconditionswithabrasivescouldalsobepursued.

Overall,thisstudyprovidesapromisingapproachforimprovingthewearresistanceandfrictionreductionofpartsinmechanicalengineeringunderoillubricationwithabrasives,andthefastnickelplatingcoatingshavethepotentialtobewidelyusedinthisfield.Anotheraspectthatrequiresfurtherinvestigationistheeffectofdifferenttypesandconcentrationsofabrasivesonthewearandfrictionpropertiesofthefastnickelplatingcoatings.ThecurrentstudyusedSiCparticlesastheabrasives,butothertypessuchasdiamond,alumina,ortitaniumdioxide,couldhavedifferenteffectsontheperformanceofthecoatings.Additionally,theconcentrationofabrasivesintheoillubricantcouldalsoinfluencetheoutcome.

Moreover,thetribologicalbehaviorofthefastnickelplatingcoatingsunderdifferentloads,speeds,andtemperaturesneedstobeexploredfurthertoprovideamorecomprehensiveunderstandingoftheirperformance.Wearandfrictionpropertiescanvarydependingonthesefactors,andthecoatingsneedtobeevaluatedunderarangeofoperatingconditionstodeterminetheirreliabilityandapplicability.

Furthermore,moredetailedanalysisofthewearmechanismsandtheformationofthewornsurfacesofthecoatingsneedstobecarriedout.Thiscouldprovideinsightintothedurabilityandstabilityofthecoatingsandallowforfurtheroptimization.

Inconclusion,thepromisingresultsofthecurrentstudyhighlightthepotentialoffastnickelplatingcoatingstoimprovethewearresistanceandfrictionreductionofmechanicalpartsunderoillubricationwithabrasives.However,moreresearchisrequiredtofullyunderstandtheunderlyingmechanismsandoptimizethecoating'sperformanceforvariedoperatingconditions.Moreover,theimpactoftheprocessingparametersonthepropertiesofthefastnickelplatingcoatingsshouldalsobeexplored.Thecurrentstudyusedspecificconditionssuchasthecurrentdensity,pHvalue,andtemperaturefortheelectroplatingprocess.However,varyingtheseparameterscanpotentiallyalterthemicrostructure,chemicalcomposition,andpropertiesofthecoatings.Theinfluenceofsuchvariationsonthetribologicalbehaviorofthecoatingsmustbeinvestigated.

Thestabilityandcorrosionresistanceofthefastnickelplatingcoatingsmustalsobeevaluated.Mechanicalpartsoftenoperateinharshenvironmentsthatcancauseerosion,corrosion,oroxidationofthesurface.Thecoatingsmustwithstandtheseharshconditionstobepracticalandeffectiveinindustrialapplications.

Furthermore,thecompatibilityofthecoatedsurfaceswithdifferentoillubricantsneedstobeinvestigatedtodeterminetheoptimalchoiceoflubricant.Coatingcompatibilitycanhaveasignificantinfluenceonthewearandfrictionpropertiesofthecoatedsurfaces.

Finally,thecost-effectivenessofthefastnickelplatingcoatingsmustbeconsideredinindustrialsettings.Theelectropla