压电变压器(英文)综述-原理-以及相关压电材料

ZhuXiaoxingPiezoelectricTransformersContentsBackgroundPrincipleofPiezoelectricTransformersExamplesandanalysisConclusionPiezoelectricTransformersPiezoelectricity:AbriefofhistoryPiezoelectricityderivesfromtheGreekword“piezein”=topress.188019391917Firsthumancontact:“StoneAge”:useof‘flint”,avarietyofquartz,toproducefirebycreatingamechanicalimpactorfriction.Beforetheinventionofmatchesthismaterialcontinuedbeingusedasalighterknockingitagainstiron.PierreandJacquesCuriediscoveredthedirect(1880)andtheinverseeffects(1881)inquartzcrystals.duringWWI,PaulLangevindevelopedaquartz-basedtransducertogenerateanddetectacousticwavesinwater.SONARandULTRASONICSTheUSArmedServicesmadethedecisiontomakelargescaleuseof“crystalcontrol”inmilitarycommunicationsystems.DuringtheWWIItheUSaloneusedabout50millionquartzcrystalelements.PiezoelectricTransformersPiezoelectricity:Abriefhistory194619651985PiezoelectriceffectisfoundinBariumTitanate.Japanesecommercialenterprisesbegantoreapthebenefitsofsteadyapplicationandmaterialsdevelopmentwork.ThecommercialsuccessoftheJapaneseeffortshasattractedtheworld-wideinterestforthistechnologyandspurredanewefforttodevelopsuccessfulpiezoceramicproducts.CeramicsPiezoelectricTransformersPiezoelectricTransformersAdvantagesofpiezoelectrictransformers(1)Highconversionefficiency(2)Simplestructure(3)Highstep-upratio(4)Stableandlongservicelife(5)CompactSizeandLightweightPiezoelectricTransformersDrivepartPowerpartVinVoutPTPPiezoelectricTransformersPiezoelectricTransformersPropertiesofPiezoelectricMaterial(1)D.C=dielectricconstant(2)Kp=electromechanicalcouplingfactor(3)Qm=mechanicalqualityfactor(4)Tc=curietemperaturePiezoelectricTransformersPropertiesofPiezoelectricMaterialPNW-PMN-PZTPb(Ni1/2W1/2)O3Pb(Mn1/3Nb2/3)O3Pb(ZrxTiy)O3Pb1-aSra(Ni1/2W1/2)0.02(Mn1/3Nb2/3)b(ZrxTiy)1-0.02-bO3PiezoelectricTransformersPreparation+0.5wt%PbO+0.3wt%Fe2O3+0.25wt%CeO2Pb1-aSra(Ni1/2W1/2)0.02(Mn1/3Nb2/3)b(ZrxTiy)1-0.02-bO3RawmaterialsAcetone-milledCalcinationCIPSinterproductsPiezoelectricTransformersSystemSampleNO.compositionPNW-PMN-PZTS1a=0,b=0.07,x=0.51,y=0.49S2a=0,b=0.07,x=0.50,y=0.50S3a=0,b=0.07,x=0.49,y=0.51S4a=0,b=0.05,x=0.51,y=0.49S5a=0,b=0.09,x=0.51,y=0.49S6a=0.02,b=0.07,x=0.51,y=0.49S7a=0.04,b=0.07,x=0.51,y=0.49S8a=0.06,b=0.07,x=0.51,y=0.49PiezoelectricTransformersabxyS100.070.510.49S200.070.500.50S300.070.490.51simpleD.CKpQmTc℃TCFr(ppm/℃)S114370.5851240325178S214450.5491532328255S313020.5031886345230PiezoelectricTransformersabxyS400.050.510.49S100.070.510.49S500.090.510.49SimpleD.CKpQmTc℃TCFr(ppm/℃)S416120.5911349340413S114370.5851240325178S510720.5461248313-291PiezoelectricTransformersabxyS100.070.510.49S60.020.070.510.49S70.040.070.510.49S80.060.070.510.49simpleD.CKpQmTc℃TCFr(ppm/℃)S114370.5851240325178S615040.5711180308161S716030.5471406285157S816800.523181427288PiezoelectricTransformersTCFrOneoftheimportantparameterthatpiezoelectrictransformerarerequiredisgoodstabilityofpiezoelectricproperties.temperaturecoefficientofresonantfrequencyofnearlyzeroispreferable.PiezoelectricTransformerssimpleD.CKpQmTc℃TCFr(ppm/℃)S114370.5851240325178S214450.5491532328255S313020.5031886345230PiezoelectricTransformersSimpleD.CKpQmTc℃TCFr(ppm/℃)S416120.5911349340413S114370.5851240325178S510720.5461248313-291PiezoelectricTransformerssimpleD.CKpQmTc℃TCFr(ppm/℃)S114370.5851240325178S615040.5711180308161S716030.5471406285157S816800.523181427288PiezoelectricTransformersPropertiesofPiezoelectricMaterialPNW-PMS-PZTPb(Ni1/2W1/2)O3Pb(Mn1/3Sb2/3)O3Pb(Zr1/2Ti1/2)O3Pb0.95Sr0.05[(Mn1/3Sb2/3)x(Ni1/2W1/2)y(Zr1/2Ti1/2)z]O3PiezoelectricTransformersSamplesxyz#10.050.020.93#20.060.020.92#30.070.020.91#40.080.020.90#50.060.010.93#60.060.030.91#70.060.040.90PiezoelectricTransformersPiezoelectricTransformersIncorporationofMn2+intoB-siteofperovskitestructuredmorphotropicphaseboundary(MPB)compositionstabilizesrhombohedralphaseagainsttetragonalone.Samplesxyz#10.050.020.93#20.060.020.92#30.070.020.91#40.080.020.90PiezoelectricTransformersSEMphotographsofthefracturedsurfaceofthesinteredspecimenswith6mol%PMSasthedifferentthecontentofPNW:(a)1mol%PNW,(b)2mol%PNW,(c)3mol%PNW,(d)4mol%PNW.PiezoelectricTransformersWiththecontentofPMSincreased,εrdecreasedandtanδincreasedgradually,becausemoreoxygenvacancieswouldbegeneratedtobalancethecharge.PiezoelectricTransformersWhenthecontentofPNWwas2mol%,εrandtanδincreasedwiththecontentofPNWincreased.WhenthecontentofPNWwas3mol%,εrandtanδdecreasedgraduallywiththecontentofPNWincreased.PiezoelectricTransformersWiththecontentofPMSincreased,KpdecreasedandQmincreased.PiezoelectricTransformersWhenthecontentofPNWwas3mol%,kpdecreasedwiththeamountofPNWincreased.WhencontentofPNWwas3mol%,Kpincreased.PiezoelectricTransformersSamplesεrtanδ（%）Tc(℃)kp(%)Qm#122340.4722561.7393#221380.58420561.31275#320480.62819058.0718#413920.74817524.52332#518700.53222060.11303#613280.92919060.21258#713140.83017058.61238ConclusionHowtogetahighperformancematerials?CompositionAnalysisandcompareHighperformancematerialsThankyou