材料专业英语---Introduction-to-materials

LOGOIntroductiontoMaterialsSchoolofmaterialsscienceandengineeringCompanyname:Thehistoryofhumancivilizationandsocialdevelopmentisstronglyintertwinedwiththepervasiveroleofmaterials.Andtheentireerasofhumancivilizationarenamedformaterials.Theapplicationsofmaterials.CompanynamepropertiesTheavailabilityCostMethodsofsynthesisandproductionTheuseofmaterialsdependson:CompanynameMechanicalpropertiesPhysicalpropertiesChemicalpropertiesCompanynamepropertiesTheavailabilityCostMethodsofsysthesisandproductionCompanynameMetalsandtheiralloys(metallicbonding)Organicpolymers(covalentbondingandsecondarybonding)Ceramics(ionicbondingandcovalentbonding)CompositesSemiconductors:electronicsBio-materialsNanotechnologyfutureCompanynameSubatomiclevel——Electronicstructureofindividualatomsthatdefinesinteractionamongatoms(interatomicbonding).Atomiclevel——Arrangementofatomsinmaterials(forthesameatomscanhavedifferentproperties,e.g.twoformsofcarbon:graphiteanddiamond)Microscopicstructure——Arrangementofsmallgrainsofmaterialthatcanbeidentifiedbymicroscopy.(Givesdifferentopticalpropertiestotransparentvs.frostedglass.)Macroscopicstructure——Structuralelementsthatmaybeviewedwiththenakedeye.Companyname(ions,atomsormolecules).Companyname:strength;ductility;stiffness;fatigue;wearandsoon.Physicalproperties:electrical,magnetic,optical,thermal,elastic,andchemicalbehaviorCompanyname:ThearrangementofindividualatomsThethirdlevel:GrainstructureFinallevel:phaseCompanyname!LOGO