材料专业英语-陶瓷材料-Ceramic-M课件

CeramicMaterials

SchoolofmaterialsscienceandengineeringCeramicMaterialsSchoolofm1Introduction1.1whatisCeramics?Aproductobtainedthroughtheactionoffireuponearthymaterials→Inorganic,nonmetallicsolids,usuallyoxides,nitrides,orcarbides.Ceramicsaretypicallycrystallineinnatureandarecompoundsformedbetweenmetallicandnon-metallicelements.2Companyname1Introduction1.1whatisCera1.2TypicalpropertiesModeratedensityLowelectricalconductivityinsulatorsStrongcompressivestrength>>tensilestrengthLow-moderatethermalconductivityinsulators

Brittle

HardVeryhighhardnessrawmaterialsareplentifulandinexpensive

manyceramicstransparenttolight

translucent,oropaque

Highelasticmodulus-greaterthanmetals

ExcellentwearresistancebecauseofhighcompressivestrengthandhardnessGoodresistancetochemicalattack3Companyname1.2TypicalpropertiesModeMainlimitation:

•verybrittleandtheyareflawsensitive

•

Cracksandotherflawsarealwayspresent4CompanynameMainlimitation:4Companyname1.3Classification•advancedceramics

alsoknownasengineeringortechnicalceramics,refertomaterialswhichexhibitsuperiormechanicalproperties,corrosion/oxidationresistance,andthermal,electrical,opticalormagneticproperties.5Companyname1.3Classification•advancedc6Companyname6Companyname7Companyname7Companyname2NatureofCeramics8Companyname2NatureofCeramics8Companyn2.1PorosityandDensity9Companyname2.1PorosityandDensity9Compa10Companyname10Companyname11Companyname11Companyname2.2StructureofCeramicsCrystalphase,glassphase,pore12Companyname2.2StructureofCeramicsCryst13Companyname13Companyname3CeramicProcessing14Companyname3CeramicProcessing14CompanyChemicalProcesses:Sol-gelprocessingsolid-phasesinteringliquid-phasesinteringmechanicalprocessingPhysicalvapordeposition(PVD)Chemicalvapordeposition(CVD)15CompanynameChemicalProcesses:Sol-gelpr16Companyname16CompanynameAcommontechniqueforconsolidatingceramicpowdersAtomicdiffusionmasstransfer(particlestoopenspaces)

tremendousamountofshrinkagecracking,distortion&/orresidualstressesReactionformednonoxideceramicsSinteringofceramicpowders17CompanynameAcommontechniqueforconsoliPropertiesofCeramics18CompanynamePropertiesofCeramics18Compan19Companyname19CompanynameMechanicalproperties

20CompanynameMechanicalproperties20CompanStrong:highcompressivestrength

HardInelastic:

donotbendlikemetals→highelasticmodulusFracturetoughness:dependsonthegeometryofboththeobjectandthecrack,theappliedstress,andthelengthofthecrackChemicalproperty:durable(resistanttocorrosion)Physicalproperties:lowdensityandhighmeltingpoint

structuralapplicationsWeakness:

brittle→composites→toimprovethetoughness21CompanynameStrong:highcompressivestrenApplicationsofCeramics22CompanynameApplicationsofCeramics22Comp23Companyname23CompanynameGlassesAglass(amorphousmaterial)isquitedifferentfromacrystallinemetalorceramic.Inaglass,thereisnolong-rangecrystallineorder.GlasstransitionThetemperatureabovewhichtheglassbecomessoftandviscousenoughtoworkisrelatedtotheglasstransitiontemperature,Tg.Belowtheglasstransitiontemperature,thematerialisrelativelyhardandstiff;aboveit,itbecomesmoreviscous.24CompanynameGlassesGlasstransition24Compa25Companyname25Companyname26Companyname26Companyname27Companyname27Companyname28Companyname28Companyname29Companyname29Companyname30Companyname30Companyname写在最后成功的基础在于好的学习习惯Thefoundationofsuccessliesingoodhabits31写在最后成功的基础在于好的学习习惯31谢谢大家荣幸这一路，与你同行It'SAnHonorToWalkWithYouAllTheWay讲师：XXXXXXXX年XX月XX日

32谢谢大家讲师：XXXXXX32CeramicMaterials

SchoolofmaterialsscienceandengineeringCeramicMaterialsSchoolofm1Introduction1.1whatisCeramics?Aproductobtainedthroughtheactionoffireuponearthymaterials→Inorganic,nonmetallicsolids,usuallyoxides,nitrides,orcarbides.Ceramicsaretypicallycrystallineinnatureandarecompoundsformedbetweenmetallicandnon-metallicelements.34Companyname1Introduction1.1whatisCera1.2TypicalpropertiesModeratedensityLowelectricalconductivityinsulatorsStrongcompressivestrength>>tensilestrengthLow-moderatethermalconductivityinsulators

Brittle

HardVeryhighhardnessrawmaterialsareplentifulandinexpensive

manyceramicstransparenttolight

translucent,oropaque

Highelasticmodulus-greaterthanmetals

ExcellentwearresistancebecauseofhighcompressivestrengthandhardnessGoodresistancetochemicalattack35Companyname1.2TypicalpropertiesModeMainlimitation:

•verybrittleandtheyareflawsensitive

•

Cracksandotherflawsarealwayspresent36CompanynameMainlimitation:4Companyname1.3Classification•advancedceramics

alsoknownasengineeringortechnicalceramics,refertomaterialswhichexhibitsuperiormechanicalproperties,corrosion/oxidationresistance,andthermal,electrical,opticalormagneticproperties.37Companyname1.3Classification•advancedc38Companyname6Companyname39Companyname7Companyname2NatureofCeramics40Companyname2NatureofCeramics8Companyn2.1PorosityandDensity41Companyname2.1PorosityandDensity9Compa42Companyname10Companyname43Companyname11Companyname2.2StructureofCeramicsCrystalphase,glassphase,pore44Companyname2.2StructureofCeramicsCryst45Companyname13Companyname3CeramicProcessing46Companyname3CeramicProcessing14CompanyChemicalProcesses:Sol-gelprocessingsolid-phasesinteringliquid-phasesinteringmechanicalprocessingPhysicalvapordeposition(PVD)Chemicalvapordeposition(CVD)47CompanynameChemicalProcesses:Sol-gelpr48Companyname16CompanynameAcommontechniqueforconsolidatingceramicpowdersAtomicdiffusionmasstransfer(particlestoopenspaces)

tremendousamountofshrinkagecracking,distortion&/orresidualstressesReactionformednonoxideceramicsSinteringofceramicpowders49CompanynameAcommontechniqueforconsoliPropertiesofCeramics50CompanynamePropertiesofCeramics18Compan51Companyname19CompanynameMechanicalproperties

52CompanynameMechanicalproperties20CompanStrong:highcompressivestrength

HardInelastic:

donotbendlikemetals→highelasticmodulusFracturetoughness:dependsonthegeometryofboththeobjectandthecrack,theappliedstress,andthelengthofthecrackChemicalproperty:durable(resistanttocorrosion)Physicalproperties:lowdensityandhighmeltingpoint

structuralapplicationsWeakness:

brittle→composites→toimprovethetoughness53CompanynameStrong:highcompressivestrenApplicationsofCeramics54CompanynameApplicationsofCeramics22Comp55Companyname23Comp