鈮錳鋯鈦酸鉛壓電陶瓷材料的研究

1、天津大學(xué)碩士學(xué)位論文鈮錳鋯鈦酸鉛壓電陶瓷材料的研究姓名：劉亞威申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：孫清池20090501ABSTRACTPbo95Sro05[(Mnv3Nb2／3)x(ZryTil01x]03(PMnNPZT)ternarypiezoelectricceramicswerepreparedbyconventionalsolidsolutionmethodThesamplesweregainedbyaddingCe02

2、inordertoenhancethepropertiesTheXraydiffraction(XRD)andthescanningelectronicmicroscope(SEM)wereappliedtoanaplyzephaseandmicrostructure，respectivelyTheeffectsofthecomposition，Z胛iratio，sinteringtemperatureonthedielectrican

3、dpiezoelectricpropertiesofthesystemwerediscussedThestudyontheeffectsofthecontentofPMnNandZr／Tiratioonthepropertiesindicatedthattheoptimumpropertieswereobtainedwithx=004Zr／Ti=52／48atsinteringtemperatureof1200。C～1225。CTIle

4、mainparameters：露／E0=1190“1200，Qm=2454～2920d33=320pC／N，Kp=0594～O595，Tc=321℃～329“C，tan8=03％strongfielddielectriclosstanS=4。055％Strong—fielddielectriclossgotitsminimumtanS=22％atsinteringtemperatureofl250℃andtheotherparamete

5、rswere“《／Eo=1020，Qm=2300，Kp0563，tan6=o4％，d33=250pC／NWiththeincreaseofPMnNcontent，c／adecreasesgradually島T3／毛、d33、QrIlandKphasamaximumrespectivelytan8increases，elasticcompliancecoefficientsstandthecurietemperaturedecreases

6、graduallyWirhtheincreasesofZr／Tiratiothephasestructurereflectedthetransitionfromtetragonalthombohedralphase，thedielectricpeakleftgraduallyandthecurietemperaturedecreasesInaddition，theeffectsofCe02dopingandisostaticmoldin

7、gonthepropertiesofthesystemwereinvestigatedTheoptimumpropertieswereobtainedwithCe02=020wt％atsinteringtemperatureof1225℃～l250℃Themainparameters：矗／氏=1300～1340，Qm=2010“2150，d33=306～321pC／N，Kp=05640571，Tc=313℃“321℃，tanS=012％

8、～02％，strongfielddielectriclosstan5=52％Thedenditesofthesamplespreparedbyisostaticmoldingwereincreasedthesizeofgraindecreased，thevalueofQmincreasedsignificantlyattheSallletime，tan8，d33andsj3fsodecreasedInaddition，theproper