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NiTi形状记忆合金垫片的密封性能研究.docx

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NiTi形状记忆合金垫片的密封性能研究 Title:SealingPerformanceResearchofNiTiShapeMemoryAlloyGaskets Abstract: NiTishapememoryalloy(SMA)gasketshavegainedconsiderableattentioninvariousengineeringapplicationsduetotheiruniqueshapememoryeffectandexcellentsealingproperties.ThispaperaimstoinvestigatethesealingperformanceofNiTiSMAgasketsbyreviewingrelevantliteratureandconductingexperimentalstudies.ThestudyfocusesonunderstandingtheunderlyingmechanismsthatcontributetothesealingeffectivenessofNiTiSMAgasketsandexplorespotentialapplicationsindifferentindustries.TheresultsofthisresearchwillprovidevaluableinsightsintotheoptimizationofNiTiSMAgasketsforenhancedsealingperformanceinpracticalengineeringapplications. Keywords:NiTishapememoryalloy,gasket,sealingperformance,shapememoryeffect,engineeringapplications 1.Introduction Sealingisacriticalaspectinvariousengineeringapplicationstopreventleakageoringressoffluidsorgases.Whiletraditionalgasketmaterialshavebeenwidelyused,theyoftensufferfromlimitationssuchaspoorresilience,inadequateresistancetopressureandtemperaturevariations,andlimitedcompatibilitywithcertainchemicals.NiTishapememoryalloygaskets,withtheiruniqueproperties,offerpromisingsolutionstoovercometheselimitations.ThispaperaimstoinvestigatethesealingperformanceofNiTiSMAgasketsandprovideinsightsintotheirpotentialapplicationsindifferentindustries. 2.ShapeMemoryEffectandMaterialProperties TheshapememoryeffectisauniquepropertyofNiTiSMAgasketsthatallowsthemtoreverttotheiroriginalshapewhenheatedaboveacertaintemperature,oftenreferredtoastheaustenitefinishtemperature(Af).Thispropertyprovidesself-recoveryandensuresthegasketsmaintainaneffectivesealevenundervaryingconditions.ThissectionwilldiscusstheshapememoryeffectandothermaterialpropertiesthatmakeNiTiSMAgasketssuitableforsealingapplications. 3.SealingMechanismsofNiTiSMAGaskets ThissectionwillexplorethesealingmechanismsofNiTiSMAgaskets,includingcontactpressure,deformationbehavior,andmaterialcompatibility.Theroleofsurfaceroughness,interfacialadhesion,andthe