添加剂对氧化铝陶瓷的烧结和显微结构的影响

X,(,510640):Al2O3,,,:,Al2O3:;;;:TQ174.1:A:1004244X(2002)01006805,,-Al2O3,-Al2O3,:,Al2O3,,,,,,,991700C;,,,,,,,Al2O3,,,,,,,:Al2O3,,,;,,[1,2]Al2O3,Al2O3,,,,;,[3]Al2O3[4],,,,11[5](nm)Mg2+0.065NaClCa2+0.099NaClSr2+0.113NaClBa2+0.135NaClFe3+0.064Cr3+0.069Ti4+0.068Mn4+0.053Si4+0.041,1,,,,:1);2)2SiO2MgOCaOSrOBaO,NaCl25120021ORDNANCEMATERIALSCIENCEANDENGINEERINGVol.25No.1Jan.2002X:2000-09-26;:2001-06-16:(98J12.1.9.Jw1602):(1976-),,,98,:,Al2O3,,,,,,,,Al2O3Song[6,7]NaOCaOSrOBaOSiO2Al2O3,1%,Al2O3,,,:,,MgO+SiO2CaO+SiO2SrO+SiO2BaO+SiO2Na2O+SiO2,,,,,,,,,,3TiO2Cr2O3Fe2O3MnO2,Al2O3,Al2O3,Al2O3,,3.1TiO2TiO2Al2O3,,Ti4+Al3+,,TiO2Al2O3,[8],TiO2Al2O3:(1)(-Al2O3)(TiO2),,,;,,,,,(2)1,Al3+(0.053nm)Ti4+(0.068nm)30%,,TiO2Al2O3,Ti4+Al3+,,,,,,,(3)Ti4+Al3+,3Ti4+,4Al3+,,TiO2Al2O3,(4)TiO2,Ti4+Ti3+,0.068nm0.075nm,Al3+40%,,,,Horn[1]TiO2,TiO2Al2O3,Powers[9],Ti,Horn[1]Al2O3,,Al2O3,,:(1),-;(2),;(3),;(4),TiO2Al2O3,961:,,3.2MgOCoble[10]1961,0.25%MgOAl2O3,1900,,MgO,,,MgOAl2O3:Ben2nisonHarmer[11],MgO50RodelGlaeser[12,13],,,MgO{1120}BaikMoon[14]Handwerker[15],MgO:MgCa(),MgCa,Ca,Mg,CaMg,Ca[16,17]:MgOAl2O3,(MgOAl2O3),Al2O3,Al2O3,Al2O3,,,MgOAl2O33.3Cr2O3Cr2O3Al2O3,Cr3+Al3+,,Han[18]Cr2O3Al2O3,Al2O3Manor[19]Cr2O3Al2O3,Cr2O3Al2O33.4Fe2O3Rao[20]Fe2O3Al2O3,,,,::3Oxo+2FexAl=2FeAl+VÊ+0.5O2(1):3Oxo+2AlxAl+6FexAl=6FeAl+2AlÊi+1.5O2(2)OxOO2-,FexAlFe3+,FeAlFe2+,VÊ2,AlxAlAl3+,Ali3Al3+,,Fe3+Fe2+Rao,Fe2O3Tartaj[2,21],Fe2O3Al2O3,,Fe2+,O2-,Fe2+,,TzingTuan[22],Al2O3Fe2O3,,Al2O33.5MnO21,MnO2TiO2,,Al2O3,TiO2Al2O3,,MnO2Erkalfa[23,24],Al2O3MnO2,Al2O3()0.1%0.5%,;()0.5%,;3%Toy[25],,MnO2,FeTi,Mn,,,,,,,,,,,,,4,,Al2O3,0725Al2O3,,,:(1)();(2)Al2O3(AlOOH-Al2O3-Al2O3;(3)(),,,,,,;,,,,,;,,:[1]HornDS,MessingGL.AnisotropicgraingrowthinTiO2-dopedalumina[J].MaterSciEng,1995,A195:169-178.[2]TartajJ,MessingGL.AnisotropicgraingrowthinFe2O3-dopedalumina[J].JAmCeramSoc,1997,80:719-725.[3]SeabaughMM,KerschtIH,MessingGL.Texturede2velopmentbytemplatedgraingrowthinliquid-phase-sinteredalumina[J].JAmCeramSoc,1997,80(5):1181-1188[4]CutllerIB.Nucleationandnucleigrowthinsinteredalu2mina[A].In:KingeryWDed.KineticsofHighTem2perayureProcess.MITPress,Cambridge,MA.1959[5].[M].:,1980.[6]SongH,CobleRL.Originandgrowthkineticsofplate2likeabnormalgrainsinliquid-phase-sinteredalumina[J].JAmCeramSoc,1990,73(7):2077-2085.[7]SongH,CobleRL.Morphologyofplatelikeabnormalgrainsinliquid-phase-sinteredalumina[J].JAmCer2amSoc,1990,73(7):2086-2090.[8],.[J].,1998,21(5):3-7.[9]PowersJD,GlaeserAM.Titaniumeffectsonsinteringandgrainboundarymobilityofalumina[J].CeramEngSciProc,1997,18(5):617-623.[10]CobleRL.Sinteringcrystsllinesolids-Experimentaltestofdiffusionmodelsinporouscompacts[J].JApplPhys,1961,32(5):793-799.[11]BennisonSJ,HarmerMP.Effectofmagnesiasoluteinsurfacediffusioninsapphireandtheroleofmagnesiainthesinteringalumina[J].JAmCeramSoc,1990,73(4):833-837.[12]RodelJ,GlaeserAM.Anisotropyofgraingrowthinalu2mina[J].JAmCermSoc,1990,73:3292-3301.[13]RodelJ,GlaeserAM.Poredragandpore-boundaryseparationinAlumina[J].JAmCermSoc,1990,73:3302-3312.[14]BaikS.MoonJH.Effectsofmagnesiumoxideongrain-boundarysegregationofcalciumduringsinteringofalu2mina[J].JAmCermSoc.1991,74:819-822.[15]HandwerkerCA,MorrisPA,CobleRL.Effectsofchemicalinhomogenitiesongraingrowthandmicrostruc2tureinAl2O3[J].JAmCeramSoc,1989,72(1):130-136.[16]BerryKA,HarmerMP.EffectofMgOsoluteonmi2crostructuredevelopmentinAl2O3[J].JAmCeramSoc.,1986,69(2):143-149.[17]YokotaK,TsukudaA,KondaY.EffectofadditionofMgOonplatelikegraingrowthinaluminasinteredbodiesandtheirmechanicalproperties[J].JournaloftheJapanSocietyofPowderandPowderMetallurgy,1998,45(11):1018-1023.[18]HanSC,YoonDY,BrunMK.Migrationofgrainboundariesinaluminainducedbychromiaaddition[J].ActaMetallMater,1995,43(3):977-984.[19]ManorE.Graingrowthinhibitioninnanocrystallinealu2minadopedwithchromia[J].NanostructuredMaterials,1997,8(3):359-366.[20]RaoWR,CutlerIB.Effectofironoxidenothesinter2ingkineticsofAl2O3[J].JAmCeramSoc,1973,56(11):588-593.[21]TartajJ,MessingGL.EffectoftheadditionofFe2O3onthemicrostructuraldevelopmentofboehmite-deriveda2lumina[J].JMeterSciLett,1997,16:168-170.[22]TzingWH,TuanWH.ExaggeratedgraingrowthinFe-dopedAl2O3[J].JMaterSciLett,1999,18:1115-1117.[23]ErkalfaH,MisrliZ,DenmirciM,etal.Thedensifica2tionandmicrostructuraldevelopmentofAl2O3withman2ganeseoxideaddition[J].JEuroCeramSoc,1995,15(2):165-171.[24]ErkalfaH,MisrliZ,BaykaraT.EffectofTiO2andMnO2on171:densificationandmicrostructuraldevelopmentofAl2O3[J].Ce2ramicInternational,1998,24(2):81-90.[25]ToyC,DemirciM,OnurluS,etal.Colloidalmethodformanganeseoxideadditiontoaluminapowderandinvesti2gationofproperties[J].JMaterSci,1995,30(16):4183-4187.EffectsofadditivesonsinteringbehaviorandmicrostructureofAl2O3WUZhen-dong,YEJian-dong(SchoolofMaterialsSci.&Eng.,SouthChinaUniversityofTechnology,Guangzhou510640,China)Abstract:AddingalittleadditivetoAl2O3canpromotethesintering,improvethemicrostructure,andenhancetheprop2ertiesofAl2O3polycrystals.Theadditivescanbedividedintotwoclassesaccordingtotheirfunctionalmechanisms:oneistoformliquidphaseinmatrix,theotheristoformsoli