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CuCrFeNiMn高熵合金的耐蚀性能研究.docx

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CuCrFeNiMn高熵合金的耐蚀性能研究 Title:CorrosionResistanceofCuCrFeNiMnHigh-EntropyAlloy:AResearchStudy Introduction: High-entropyalloys(HEAs)aremulti-componentmaterialsthatcontainequiatomicornear-equiatomiccompositionsofmultipleelements.Thesealloyshavegainedsignificantattentionduetotheirexceptionalcombinationofmechanical,thermal,andchemicalproperties.AmongvariousHEAs,CuCrFeNiMnalloystandsoutasapromisingcandidateforawiderangeofapplicationsduetoitsexceptionalmechanicalstrengthandexcellentresistancetodeformation.However,thecorrosionresistanceofthisalloyremainsacrucialaspectthatneedstobethoroughlyinvestigated. Objective: TheaimofthisresearchstudyistoextensivelyevaluatethecorrosionresistanceperformanceoftheCuCrFeNiMnhigh-entropyalloyindifferentcorrosiveenvironments.Thestudyfocusesonunderstandingthealloy'sbehaviorundervariousconditions,includingacidic,alkaline,andsalineenvironments. Methodology: 1.SamplePreparation:CuCrFeNiMnalloysamplesofsuitabledimensionandshapewerepreparedusingappropriatecastingtechniques.Carewastakentoensureuniformityandconsistencyofthealloycomposition. 2.CorrosionTesting:Thesamplesweresubjectedtovariouscorrosiontestsincluding: a.Electrochemicalmeasurements:Potentiodynamicpolarizationandelectrochemicalimpedancespectroscopy(EIS)wereperformedtoobtaininformationaboutthecorrosionbehaviorandpassivefilmstability. b.Immersiontests:Immersionofsamplesincorrosivesolutionsforaspecifictimeperiodhelpedevaluatethecorrosionrateandsurfacemorphologychanges. c.Weightlossmeasurement:Afterexposuretocorrosionenvironments,thesampleswereweighedtodeterminethemassloss,allowingcalculationofcorrosionrate. 3.SurfaceAnalysis:ScanningElectronMicroscopy(SEM),Energy-DispersiveX-RaySpectroscopy(EDS),andX-rayDiffraction(XRD)wereemployedtostudythecorrosionmorphology,elementalcomposition,andcrystallographicchangesonthesamplesurfaces. ResultsandDiscussion: TheobtainedresultsshedlightonthecorrosionbehavioroftheCuCrFeNiMnHEA.VariousparameterssuchastheinfluenceofpH,chlorideconcentration,temperature,an