材料工程英文介绍 材料科学与工程学院.ppt

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1、MaterialsScienceAndEngineering1Insulationmaterials2What’smaterialsscienceandengineering?3Materials have always been important to the advance of civilization.SuchasStoneageandBronzeage4StructuralandpropertiesItwasnotuntilrelativelyrecenttimesthatscientistscametounderstandtherelationshipbetwee

2、nthestructuralelementsofmaterialsandtheirproperties.Materialsprocessingprocessnotonlyaltersthestructure,butalsodecidesthematerialcharacteristicandperformance.5Whatisitusedtosolve?Materialengineeringmainlytosolvetheproblemandcreatematerialapplication.6What’sisitusedtosolve?Advancementintheund

3、erstandingofamaterialtypeisoftentheforerunnertothestepwiseprogressionofatechnology.Forexample,automobileswouldnothavebeenpossiblewithouttheavailabilityofinexpensivesteelorsomeothercomparablesubstitutes.Inourcontemporaryera,sophisticatedelectronicdevicesrelyoncomponentsthataremadefromwhatarec

4、alledsemiconductingmaterials.789Whydowestudymaterials?Whydowestudymaterials?Manyanappliedscientistsorengineers,whethermechanical,civil,chemical,orelectrical,willbeexposedtodesignprobleminvolvingmaterialsatonetimeoranother.Examplesmightincludeatransmissiongear,thesuperstructureforabuilding,an

5、oilrefinerycomponent,oranintegratedcircuitchip.10What’smaterialsscienceandengineeringOfcourse,materialsscienceandengineeringistotallyinvolvedintheinvestigationanddesignofmaterials.11selecttherightmaterialsManytimes,amaterialsproblemistoselecttherightmaterialsfrommanythousandsavailableones.Th

6、ereareseveralcriteriaonwhichthefinaldecisionisnormallybased.Firstofall,thein-serviceconditionsmustbecharacterized.12In-serviceconditions13selecttherightmaterialsAsecondselectionconsiderationisanydeteriorationofmaterialpropertiesthatmayoccurduringserviceoperation.Finally,probablytheoverriding

7、considerationiseconomics.14deteriorationofmaterialproperties15Themorefamiliaranengineerorscientistiswiththevariouscharacteristicsandstructure-propertyrelationships,aswellasprocessingtechniquesofmaterials,themoreproficientandconfidentheorshewillbeto