铁电材料压电特性的研究现状摘要铁电材料包含铁电、压电、介电、热释电等性质。所有铁电材料都同一时刻拥有铁电和压电两种性质。铁电材料的压电性广泛应用于压电陶瓷上，压电陶瓷具有很重要的不可替代的作用，应用最广泛的压电陶瓷有PZT（锆钛酸铅）。但是其含有的PbO对人体和环境有害，所以无铅压电陶瓷的开发有重要意义，并且目前该产业的开发趋向就是无铅压电陶瓷。本文大致描述了铁电材料压电特性的发展历程和目前的研究成果，详细概括了几种压电性铁电材料的特点研究进展和应用领域最后综述了压电材料在未来需要攻克的难题和对未来发展的展望。关键词铁电材料压电材料压电特性压电陶瓷无铅压电陶瓷ResearchStatusofPiezoelectricPropertiesofFerroelectricMaterialsABSTRACTFerroelectricmaterialsincludeferroelectric,piezoelectric,dielectric,pyroelectricandsoon.Allferroelectricmaterialshavebothferroelectricandpiezoelectricproperties.Thepiezoelectricityofferroelectricmaterialsiswidelyusedinpiezoelectricceramics,Piezoelectricceramicshasaveryimportantirreplaceablerole,themostwidelyusedpiezoelectricceramicsarePZT.ButitcontainsthePbOharmfultothehumanbodyandtheenvironment,sothedevelopmentoflead-freepiezoelectricceramicsisofgreatsignificance,andthecurrenttrendofthedevelopmentofpiezoelectricceramicsindustryislead-freepiezoelectricceramics.Thispaperdescribesthedevelopmentofpiezoelectricpropertiesofferroelectricmaterialsandthecurrentresearchresults,thispaperintroducestheresearchprogressandapplicationfieldofthepiezoelectricpropertiesofseveralferroelectricmaterialsindetail.Finally,thepapersummarizestheproblemsofpiezoelectricmaterialsinthefutureandtheprospectoffuturedevelopment.KeywordsFerroelectricmaterialsPiezoelectricmaterialsPiezoelectriccharacteristicsPiezoelectricCeramicsLead-freepiezoelectricceramics目录第1章引言..................................................................................................................................1第2章压电特性的原理..............................................................................................................3第3章铁电材料压电特性的研究..............................................................................................53.1PZT的压电性能及改性研究.....................................................................................................53.1.1通过掺杂改变压电性能...................................................................................................63.1.2采取特别的制作方法提高压电特性............................................................................63.2无铅压电陶瓷................................................................................................................................73.2.1钛酸钡基（BT）压电陶瓷的研究现状......................................................................73.2.2钛酸铋钠基(BNT)无铅压电材料的改性研究............................................................83.2.3碱金属铌酸盐（（K1/2Na1/2）NbO3，KNN）系无铅压电陶瓷...........................9结论..............................................................................................................................................................12致谢..............................................................................................................................................................13参考文献..............................................................................................................................
