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Reline离子液体中电沉积锌镀层和复合镀层的研究.docx

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Reline离子液体中电沉积锌镀层和复合镀层的研究 Abstract Withtheincreasingdemandforhigh-qualitycoatingsinvariousindustries,thestudyofelectrochemicaldepositionofmetalshasbecomeakeyissueinmaterialsscience.ThisstudyaimstoinvestigatethedepositionofzinccoatingsandcompositecoatingsinRelineionicliquid.TheresultsshowedthatbothzincandcompositecoatingscouldbesuccessfullydepositedonthesubstrateinRelineionicliquid.Thecompositecoatingshowedahigherhardnessandbettercorrosionresistancecomparedwiththepurezinccoating.Thedepositionmechanismandtheinfluenceofprocessparametersonthecoatingpropertieswerealsodiscussedinthispaper. Introduction Electrodepositionisawidelyusedmethodtodepositmetalcoatingsondifferentsubstrates.Itiswidelyusedinindustrialapplicationsforimprovingthefunctionalandprotectivepropertiesofthesubstrate.Electrodepositioninvolvestheconversionofmetallicionsintometallicsolidsonthesubstratesurface.Thepropertiesofthecoatingdependontheprocessparametersandthepropertiesoftheelectrolyte.Traditionalelectrolytessuchasaqueoussolutions,havelimitationssuchaslowsolubilityofmetalsalts,poorwettability,andlimitedstability.Ionicliquids(ILs)haveemergedaspromisingelectrolytesalternativetowater-basedelectrolytesbecauseoftheiruniquepropertiessuchashighconductivity,lowvaporpressure,wideelectrochemicalwindows,andalargesolubilityrangeformetalsalts. Relineionicliquidisakindofhalide-basedIL,whichhasgoodelectrochemicalstability,highconductivity,andlowtoxicity,makingitapotentialcandidateforelectrodepositionofmetalcoatings.Inthisstudy,weinvestigatedtheelectrodepositionofzinccoatingsandcompositecoatingsinRelineionicliquid,andevaluatedtheirproperties. ExperimentalProcedure Thesubstrateusedinthisstudywasastainlesssteelplate,whichwaspolishedanddegreasedbeforethedepositionprocess.Theelectrodepositionwascarriedoutusingathree-electrodesystemconsistingofaworkingelectrode(stainlesssteelplate),acounterelectrode(platinumelectrode),andareferenceelectrode(saturatedcalomelelectrodeSCE).Relineionicliquidwasusedastheelectrolyteandzincsulfate