鈮酸鍶鋇納米粉體與陶瓷的制備及性能.pdf

1、青島大學碩士學位論文鈮酸鍶鋇納米粉體與陶瓷的制備及性能姓名：王春龍申請學位級別：碩士專業(yè)：材料學指導教師：隋萬美彭智20060610PreparationandproperitiesofStrontiumBariumNiobatenanometerpowderandceramicAbstractStrontiumBariumNiobate，B礬5Sr㈣Nb208(SBN50)，hasbeensynthesized，forthefirst

2、time，bytheorganicgelmethodoi“Ba(COa)2、Sr(C03)2andNb20sPowderXraydiffractionstudyshowstetragonaltungstenbronzephaseformationat800℃Particlemorphologyandsizeofheat—treatedpowderhasbeenexaminedusingTransmissionElectronMicros

3、copyThepartjcleaveragesizeofheat—treatedpowderisabout40ntoThepelIetshavebeensinteredat1000、1050、1100and1150℃andateachtemperaturefor90minrespectivelyEffectoftemperatureondielectricpropertieshasbeeninvestigatedIllghestdiel

4、ectricconstant(￡)hasbeenobservedforthepelletsinteredaL1150℃AvariationinTcfrom80to85℃hasa1sobeenobservedStrontiumBariumCeriumNiobate，Ban5Sro5Ce。Nb2066(x=OOl，002，004)，representedbyiCeSSO，2CES50，4CES50，hasbeensynthesized，fo

5、rthefirsttime，bytheorganicgelmethodofBa(CO。)2，Sr(c03)。，Ce(NO，)。6H20andNb：0。ParticieInoF’pilelogyandsizeofheat‘—treatedpowderhasbeenexaminedusingTransmissionElectronMicroscopyTheparLi(：1eaveragesizeofheat一treatedpowderisa

6、bout30hmThepelletslavebeensinteredat10001100and】150℃andateachtemperaturefor90min，respectivelyThesinteringtemperatureissameasthatofSBN50much10werthenthatofsolid—staterouteEffectoftemperaLureoHdielectricpropertieshasbeenin