雨课堂学堂在线学堂云Fundamentals of Inorganic Materials Science(陕西科技大学)单元测试考核答案

第1题2-19.Whentheoxygenpartialpressuredecreases,electricalconductivityofTiO2-xisinproportionto(

)powerofoxygenpartialpressure.A1/3B1/4C1/5D1/6第2题2-17.Thereis()latticedefectinthenon-stoichiometriccompoundofCd1+xO.AanionvacancytypeBcationinterstitialtypeCanioninterstitialtypeDcationvacancytype第3题2-15.Whenunequaldisplacementoccurs,thecomponentdefectswillinevitablyoccurandthecomponentdefectconcentrationmainlydependsontemperature.

第4题2-13.Generallyspeaking,theFrenkeldefectdominateswhentheradiusdifferencebetweenpositiveandnegativeionsissmall,andSchottkydefectdominateswhentheradiusdifferencebetweenthetwoionsislarge.

第5题2-11.Fortheexpressionofcrystalstructuredefect,absenceofsuperscriptrepresentschargeof(

).A0B-1C+2D+3第6题2-9.Therewillbelatticedefectswhentemperature().Ais0KB>298KC>0KD>0℃第7题2-7.Withtheincreaseoftemperature,theGibbsenergyofformationofthermaldefect().AincreasesBremainsconstantCdecreases第8题2-5.Thecommontypesofpointdefectsincrystalstructureinclude____.AinterstitialatomBvacancyCimpurityatom正确答案：ABC第9题2-3.Non-stoichiometriccompoundshavethetypesof(

).AAnionvacancytypeBCationinterstitialtypeCAnioninterstitialtypeDCationvacancytype正确答案：ABCD第10题2-1.ForthecrystalwithformationofSchottkydefects,thevolumeofthecrystalwill(),andthedensityofthecrystalwill().Aincrease;remainconstantBremainconstant;remainCremainconstant;decreaseDincrease;decrease第1题3-19.Whenatomicradiusratioofnonmetaltometal

rx/rm>0.59,interstitialcompoundwillbeformed,suchashydrideandnitride.

第2题3-17.Ifthevalanceofasubstitutionalforeigncationishigherthanthatofthenormalhostcation,cationvacanciesorinterstitialanioncouldbeproduced.

第3题3-15.Theelementsformingthesubstitutionalsolidsolutioncanbeinfinitelymiscible,andtheelementsforminginterstitialsolidsolutioncanonlybefinitelymiscible.

第4题3-13.Thereare()kindsof“componentdefects”forinterstitialsolidsolution.A2B3C4D5第5题3-11.Interstitialsolidsolutionandsubstitutionalsolidsolutionformedbetweennonequivalentcompoundscannotbecontinuoussolidsolution.

第6题3-9.Accordingtothesolubilityofsoluteinsolvent,solidsolutioncanbeclassifiedinto(

)types.A1B2C3第7题3-7.Forinorganiccompounds,whenΔ=(r1-r2)/r1<15%,(

)can

beformedwhenthecompoundshavethesamecrystalstructureanddifferentelectronegativity.AcompoundBcontinuoussolidsolutionClimitedsolidsolutionDnosolidsolution第8题3-5.Forinorganiccompounds,whenΔ=(r1-r2)/r1=15%~30%,(

)canbeformedwhenthecompoundshavethesamecrystalstructureandelectronegativity,buttheelectronegativitydifference>0.4.AcompoundBcontinuoussolidsolutionClimitedsolidsolutionDnosolidsolution第9题3-3.Forsubstitutionalsolidsolution,whenΔ=(r1-r2)/r1>30%,(

)canbeformed.AcompoundBcontinuoussolidsolutionClimitedsolidsolutionDnosolidsolution第10题3-1.Thefactorsaffectingthesolidsolubilityofthesubstitutionalsolidsolutionare____.AIonradiusBThechemicalvalenceofionsCElectronegativityDThetypeofcrystalstructure正确答案：ABCDHomeworkforchaper5第1题5-1.C2S

hascomplex

crystallinetransitionbetweenα,α’,βandγ,inwhichthecrystallineformof____isakindofhydraulicmineralinsilicatecement.Aα-C2SBα’-C2SCβ-C2SDγ-C2S第2题5-2.Atmost____phasescoexistintheternaryintensivesystem.A1B2C3D4第3题5-3.Theadditionof____willnotaffecttherefractorinessofthesiliconbrick.ACaOBAl2O3CMgODNa2O第4题5-4.Theroleof____istojudgethenatureofinvariantpoints.AconnectionprincipleBtangentprincipleCcenterofgravityprincipleDtriangleprinciple第5题5-5.Theroleof____istoanalyzethecrystallizationproductandendpoint.AconnectionprincipleBtangentprincipleCcenterofgravityprincipleDtriangleprinciple第6题5-6.Thetimethatittakestoreachanequilibriumstatecanbeobtainedfromthediagrams.()第7题5-7.Themetastablestate,alsoknownasthethermodynamicnonequilibriumstate,alwaysoccursintheinorganicmaterialsystem.()第8题5-8.Whendisplacementtransitionoccurs,thereisnotmuchdifferenceinstructurebetweenthevariants,sothetransitionspeedisrapid.()第9题5-9.Congruentmeltingcompoundisastableone.Whenitisheatedtomelt,theliquidphaseproducedisofthesamecompositionasthecompound.()第10题5-10.Inpracticalapplications,magnesiabricksandsilicabrickscanbeusedtogether.()Homeworkforchaper6第1题6-1.Thediffusionprocessiscloselyrelatedtothecrystalstructure.Themoretightlypackedthestructure,().Atheeasierthediffusionis.Bthemorethediffusionis.Cthesmallervalueofdiffusionactivationenergyis.Dthelargervalueofdiffusionactivationenergyis.正确答案：BD第2题6-2.Whichofthefollowingstatementaboutdiffusioninsolidiscorrect?

AThediffusionsofC,NandOinmostmetalsareinterstitial

diffusion.BThediffusionsofparticlesintheioniccrystals(MgO,NaClandCaF2)arealwaysvacancydiffusionCThecovalentcrystalshaveopencrystalsstructure,andthelatticespaceislarger,sointerstitialdiffusionisdominant.DTheparticlesdiffuseindiamondbyvacancymechanism.正确答案：AD第3题6-3.Whichofthefollowingstatementisincorrect?

AInFeO,thehighertheoxygenpartialpressure,thegreaterthediffusioncoefficientof

Fe2+.BInFeO,thehighertheoxygenpartialpressure,thesmallerthediffusioncoefficientof

Fe2+.CIn

ZrO2,thehighertheoxygenpartialpressure,thegreaterthediffusioncoefficientofO2-.DIn

ZrO2,thehighertheoxygenpartialpressure,thesmallerthediffusioncoefficientofO2-.正确答案：BC第4题

6-4.Whichofthefollowingiscorrectaboutdiffusiondynamics?ATheexpressionofFick'sfirstlawis,anditisusedtosolvetheproblemofsteady-statediffusion.BTheexpressionofFick'ssecondlawis,anditisusedtosolvetheproblemofnonsteady-statediffusion.CBothofthetwolawsareconcernedwiththeself-diffusionprocess.DBothofthetwolawsjustquantitativelydescribedthediffusionfromthemacroscopicperspective,anddefineddiffusioncoefficient,butdidnotgiveaclearrelationshipbetweenthediffusioncoefficientandmicrostructure.正确答案：ABCD第5题6-5.Accordingtowhethertheconcentrationgradientremainsunchanged,diffusioncanbedividedinto().ASelf-diffusionBInter-diffusionCSteady-statediffusionDNonsteady-statediffusion正确答案：CD第6题6-6.Comparedwithdiffusioninfluid,whichofthefollowingarethediffusioncharacteristicsofparticlesinsolids?

AHighertemperatureisrequiredBIsotropyCAnisotropyDThediffusionrateisslow正确答案：ACD第7题6-7.Inthevacancydiffusionmechanism,whenthetemperatureishigh,()isdominant;whenthetemperatureislow,itismainly(

).ANonintrinsicdiffusionBIntrinsicdiffusionCNonstoichiometricvacancydiffusionDNonsteady-statediffusion正确答案：AB第8题6-8.Qs,QgandQbarethediffusionactivationenergiesofsurfacediffusion,grainboundarydiffusionandvolumediffusion,respectively.Whichofthefollowingrelationshipiscorrect?

AQb﹥QgBQb﹥Qg﹥QsCQg﹥QsDQs﹥Qb﹥Qg正确答案：ABC第9题6-9.Inthethermodynamicequationofdiffusion,isthethermodynamicfactorofdiffusioncoefficient.Forthenon-idealhybridsystem,when>0,theresultofdiffusionisthat(

);when<0,thediffusionleadsto().AtheconcentrationtendstobeuniformBtheconcentrationdoesnotchangeCsegregationofsoluteatomsDphaseseparationoccurs正确答案：ACD第10题6-10.ThemainfactorsaffectingthediffusioncoefficientD0aretemperatureanddiffusionactivationenergy.Homewordforchapter7第1题7-1.Inorderforthereactiontoproceed,threestepsmusttakeplaceinseries,andtheoverallreactionrateisdeterminedbythefastestoftheseseriessteps.()第2题7-2.WhenAl2O3andCoOareusedtoproducecobaltaluminumspinel,weuselightburnedAl2O3insteadofdeadburnedAl2O3athightemperature.

第3题7-3.Duringthesolidstatereaction,wedonotwantthepolycrystallinetransitionofthereactants,becausethecrystaltransformationisnotconducivetothereaction.()第4题7-4.Theincreaseofpressureisbeneficialtothesolidstatereaction.Homeworkforchapter9第1题9-1.Addingadditivescanpromotesintering,whatroledotheyplayinsintering?

ASolidsolutionisformedbytheadditivesandthesinteringsystem.BLiquidphaseisformedbytheadditivesandthesinteringsystem.CCompoundcanbeformedbytheadditivesandthesinteringsystem.DAdditivescanpreventthecrystaltransformation.正确答案：ABCD第2题9-2.Theoriginalparticlesizeoftherawpowderisanimportantfactoraffectingsintering.Whichofthefollowingstatementiscorrect?

AThesmallertheparticlesize,thegreaterthesinteringdrivingforce.BThesmallertheparticlesize,thefasterthesinteringrate.CThesinteringmechanismisdifferentwhentheparticlesizeoftherawpowderisdifferent.DThenon-uniformparticlesizeofpowderwillcausesecondaryrecrystallization.正确答案：ABCD第3题9-3.Themethodsusedtocontrolsecondaryrecrystallizationinclude().ASelectthestartingpowderwithauniformparticlesizedistribution.BControlthesinteringtemperaturetoinhibitthegrainboundarymigration.CAddasmallamountofgrainboundarymovementinhibitors.DProlongtheholdingtime.正确答案：ABC第4题9-4.Thefourmasstransfermechanismsofsinteringareevaporation-condensationmasstransfer,diffusionmasstransfer,flowmasstransferandsolution-precipitationmasstransfer.Theircorrespondingkineticequationsareinorderof().A△L/L0=0B△L/L0∝t2/5C△L/L0∝tD△L/L0∝t1/3正确答案：ABCD第5题9-5.Comparedwiththesolidstatesintering,thecharacteristicsofliquidphasesinteringinclude().AhighmasstransferrateBhighdensificatio