材料科学英语Unit 1 Lecture 3 Materials engineering and engineers.ppt

MaterialsengineeringandengineersUnit1Well-said:Onlythosewhoattempttheabsurdcanachievetheimpossible.——AlbertEinsteinUnit1

Materialsengineeringismainlyconcernedwiththeuseoffundamentalandappliedknowledgeofmaterialssothatthematerialscanbeconvertedintonecessaryproductsdesiredbysociety.

Theproductionandprocessingofmaterialsintofinishedgoodsconstitutesalargepartofourpresenteconomy.Engineers,whoareknowledgeableaboutthestructureandpropertiesofmaterials,designmanufacturedproducts,selectsuitablematerialsanddeveloptherequiredprocessingsystemsfortheproduction.

Materialsengineersmayspecializeinunderstandingspecifictypesofmaterials.Ceramicengineersdevelopceramicmaterialsandtheprocessingmethodsofmakingthemintousefulproducts.Compositesengineersdevelopmaterialswithspecial,engineeredpropertiesforapplicationsinaircraft,automobiles,etc.Plasticsengineersdevelopandtestnewplastics,knownaspolymers,fornewapplications.Semiconductorprocessingengineersdevelopnewmicroelectronicmaterialsforcomputing,sensing,etc.

Forengineers,thesearchfornewmaterialsneverends.Electricalengineerssearchfornewmaterialssothatelectronicdevicescanoperatefasterandathighertemperatures.Materialsengineersgenerallyworkinofficeswheretheyhaveaccesstocomputersandequipment.Othersworkinfactoriesorresearchanddevelopmentlaboratories.

Unit1Task1：Applicationsofthefivematerials

Unit1

MetalsSteel,CastIron,Aluminum,Copper,TitaniumPolymersPlastics,Wood,Cotton(rayon,nylon),“glue”Unit1CeramicsGlass,Concrete,Brick,Alumina,Zirconia,SiCCompositesGlassFiber-reinforcedpolymers,CarbonFiber-reinforcedpolymers,MetalMatrixComposites,etc.ElectronicsCircuitboards,Diodes,Capacitors

Unit1Task2：Chooseyourownmaterials