陶瓷含報Vol.44_No.3第44卷，第3期2023年6月D0I:10.13957/j.cnki.tcxb.2023.03.013JournalofCeramicsJun.2023B位稀土Y3+掺杂增强BNBST弛豫铁电陶瓷的介温稳定性与储能特性研究朱文，孟月，宋福生，李志鹏，沈宗洋(景德镇陶瓷大学材料科学与工程学院先进陶瓷材料研究所中国轻工业功能陶瓷材料重点实验室，江西省能量存储与转换陶瓷材料工程实验室，江西景德镇333403)摘要：采用固相法制备了(Bio.5Na.5)0.6s(Bao.3Sro.7)0.35Ti--Y,3(缩写为BNBSTY100x，x=0、0.02、0.04、0.06、0.08、0.10)陶瓷，系统研究了B位稀土Y3+掺杂对BNBST陶瓷的相结构、微观结构、介电性能及储能特性的影响。结果表明：当Y3+掺杂量较少时(x≤0.04),陶瓷呈现单一的立方钙钛矿结构；当Y3+掺杂量较大时(x≥0.06)，出现了第二相YzTi207。Y3+掺杂后，陶瓷晶粒逐渐细化且致密度及均匀性良好，陶瓷的介电峰逐渐被抑制并拓宽展平，介温稳定性获得改善，提高了高温条件下的阻抗值。同时，陶瓷的P-E电滞回线显著变细，所制备的BNBSTY陶瓷在100kV·cm的低电场下实现了高的有效储能密度(Wre=1.27J·cm^3)和储能效率(n=89%)，并具备良好的温度、频率稳定性和抗疲劳循环特性，可作为陶瓷电容器候选材料在较宽温度范围内使用。关键词：储能陶瓷；弛豫铁电；稀土离子掺杂；BNT；BST中图分类号：TQ174.75文献标志码：A文章编号：1000-2278(2023)03-0525-09EnhancedDielectricTemperatureStabilityandEnergyStorageCharacteristicsofBNBSTRelaxorFerroelectricCeramicsthroughB-siteRareEarthY3+DopingZHUWen,MENGYue,SONGFusheng,LIZhipeng,SHENZongyang(EnergyStorageandConversionCeramicMaterialsEngineeringLaboratoryofJiangxiProvince,ChinaNationalLightIndustryKeyLaboratoryofFunctionalCeramicMaterials,AdvancedCeramicMaterialsResearchInstitute,SchoolofMaterialsScienceandEngineering,JingdezhenCeramicUniversity,Jingdezhen333403,Jiangxi,China)Abstract:(Bio.5Nao.5)0.65(Bao.3Sro.7)0.35Ti-xY,O3(BNBSTY100x,x=0,0.02,0.04,0.06,0.08,0.10)ceramicswerepreparedbyusingsolidstatereactionmethod.Theeffectofy3+onphasecomposition,microstructure,dielectricpropertiesandenergystoragecharacteristicsoftheBNBSTceramicswassystematicallystudied.Theceramicsexhibitedasinglepseudocubicperovskitestructurewhentheconcentrationofy3+isx≤0.04,whileasecondaryphaseY2T...
