材料专业英语Introductiontomaterials专家讲座

IntroductiontoMaterials

Schoolofmaterialsscienceandengineering材料专业英语Introductiontomaterials专家讲座第1页1MaterialsandMaterialScienceThesignificance/importanceofmaterialscanbeunderstoodfromthefollowingaspects:Thehistoryofhumancivilizationandsocialdevelopmentisstronglyintertwinedwiththepervasiveroleofmaterials.Andtheentireerasofhumancivilizationarenamedformaterials.Theapplicationsofmaterials.Companyname材料专业英语Introductiontomaterials专家讲座第2页Companyname材料专业英语Introductiontomaterials专家讲座第3页1.1Howisamaterialdefined?TheSpertiesTheavailabilityCostMethodsofsynthesisandproductionTheuseofmaterialsdependson:Companyname材料专业英语Introductiontomaterials专家讲座第4页1.2TheclassesofmaterialsCompanyname材料专业英语Introductiontomaterials专家讲座第5页1.3MaterialspropertiesPropertiesarethewaythematerialrespondstotheenvironmentandexternalforces.MechanicalpropertiesPhysicalpropertiesChemicalpropertiesCompanyname材料专业英语Introductiontomaterials专家讲座第6页1.4UseofMaterialsDepends:propertiesTheavailabilityCostMethodsofsysthesisandproductionCompanyname材料专业英语Introductiontomaterials专家讲座第7页1.5MaterialsScienceMaterialscienceistheinvestigationoftherelationshipamongprocessing,structure,properties,andperformanceofmaterials.MaterialsSciencedealswiththerelationshipbetweenthemacroscopicpropertiesandthemicroscopicstructures.Companyname材料专业英语Introductiontomaterials专家讲座第8页Companyname材料专业英语Introductiontomaterials专家讲座第9页2TypesofMaterialsMetalsandtheiralloys(metallicbonding)Organicpolymers(covalentbondingandsecondarybonding)Ceramics(ionicbondingandcovalentbonding)CompositesSemiconductors:electronicsBio-materialsNanotechnologyfutureCompanyname材料专业英语Introductiontomaterials专家讲座第10页2.1MetalsCompanyname材料专业英语Introductiontomaterials专家讲座第11页MetalandalloysCompanyname材料专业英语Introductiontomaterials专家讲座第12页2.2CeramicsCompanyname材料专业英语Introductiontomaterials专家讲座第13页ceramicsCompanyname材料专业英语Introductiontomaterials专家讲座第14页2.3PolymersCompanyname材料专业英语Introductiontomaterials专家讲座第15页polymersCompanyname材料专业英语Introductiontomaterials专家讲座第16页2.4CompositesCompanyname材料专业英语Introductiontomaterials专家讲座第17页3StructuralCharacteristicofMaterialsSubatomiclevel——Electronicstructureofindividualatomsthatdefinesinteractionamongatoms(interatomicbonding).Atomiclevel——Arrangementofatomsinmaterials(forthesameatomscanhavedifferentproperties,e.g.twoformsofcarbon:graphiteanddiamond)Microscopicstructure——Arrangementofsmallgrainsofmaterialthatcanbeidentifiedbymicroscopy.(Givesdifferentopticalpropertiestotransparentvs.frostedglass.)Macroscopicstructure——Structuralelementsthatmaybeviewedwiththenakedeye.Companyname材料专业英语Introductiontomaterials专家讲座第18页Crystalline:anorderedarrangementoftheirelementaryparticles(ions,atomsormolecules).Companyname材料专业英语Introductiontomaterials专家讲座第19页ThreetypesofcrystalstructureCompanyname材料专业英语Introductiontomaterials专家讲座第20页4Structure-properties-processingrelationshipCompanyname材料专业英语Introductiontomaterials专家讲座第21页4.1PropertiesMechanicalproperties:describehowthematerialrespondstoanappliedforceorstress:strength;ductility;stiffness;fatigue;wearandsoon.Physicalproperties:electrical,magnetic,optical,thermal,elastic,andchemicalbehaviorCompanyname材料专业英语Introductiontomaterials专家讲座第22页4.2StructureAtthefinestlevel:ThearrangementofelectronssurroundingthenucleusofatomsAtthenextlevel:ThearrangementofindividualatomsThethirdlevel:GrainstructureFinallevel:phaseCompanyname材料专业英语Introductiontomaterials专家讲座第23页Casting;welding;brazing;soldering;adhesive;bonding;forging;drawing;extrusion;rolling;bending;powdermetallurgy;mach