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放电等离子体烧结BaTiO3xBiNi0.5Zr0.5O3陶瓷的介电和阻抗性能


文档名:放电等离子体烧结BaTiO3xBiNi0.5Zr0.5O3陶瓷的介电和阻抗性能
摘要:采用传统固相反应法合成BaTiO3-xBi(Ni0.5Zr0.5)O3粉体和放电等离子体烧结技术制备BaTiO3-xBi(Ni0.5Zr0.5)O3陶瓷,研究陶瓷的晶体结构、微观形貌、介电和阻抗性能.结果表明:BaTiO3-0.10Bi(Ni0.5Zr0.5)O3陶瓷具有钙钛矿型,晶体结构为赝立方相,晶粒尺寸约为0.64μm,密度为5.81g/cm3,最大介电常数为7149,且随频率升高相变温度向高温移动.在1kHz下,BaTiO3-0.10Bi(Ni0.5Zr0.5)O3陶瓷的ln(1/ε-1/εm)与ln(T-Tm)的拟合曲线斜率为1.61,在-41~169℃内,Δε/ε25℃≤±15%,表明样品有良好的温度稳定性.此外,随温度和频率的升高,材料的阻抗降低,在50℃下,当频率为100Hz时,电阻为2.33×106Ω,离子电导率为10-8S/cm.

Abstract:BaTiO3-xBi(Ni0.5Zr0.5)O3powdersweresynthesizedbytraditionalsolid-statereactionmethod,andthenBaTiO3-xBi(Ni0.5Zr0.5)O3ceramicswerepreparedbysparkplasmasintering.Thecrystalstructure,micro-morphology,dielectricandimpedancepropertiesofthepreparedceramicswerestudied.TheresultsshowthatBaTiO3-xBi(Ni0.5Zr0.5)O3ceramicshaveperovskitestructureandthecrystalstructureispseudo-cubicphase,thegrainsizeisabout0.64μm,thedensityofthesampleis5.81g/cm3,themaximumofthedielectricconstantis7149,andthephasetransitiontemperatureshiftstohighertemperaturewiththeincreaseoffrequency.At1kHz,theslopeofthefittingcurvebetweenln(1/ε-1/εm)andln(T-Tm)ofBaTiO3-0.10Bi(Ni0.5Zr0.5)O3ceramicsis1.61,andΔε/ε25℃≤±15%at-41-169℃,indicatingthatthesamplehasagoodtemperaturestability.Inaddition,theimpedancedecreaseswiththeincreaseoftemperatureandfrequency;whenthefrequencyis100Hzat50℃,theresistanceis2.33×106Ωandtheionicconductivityis10-8S/cm.

作者:肖长江马金明张群飞Author:XIAOChangjiangMAJinmingZHANGQunfei
作者单位:河南工业大学材料科学与工程学院,郑州450001
刊名:材料工程 ISTICEIPKU
Journal:JournalofMaterialsEngineering
年,卷(期):2024, 52(5)
分类号:TB34
关键词:BaTiO3-xBi(Ni0.5Zr0.5)O3放电等离子体烧结赝立方相介电性能弛豫特性阻抗
Keywords:BaTiO3-xBi(Ni0.5Zr0.5)O3sparkplasmasinteringpseudo-cubicphasedielectricpropertyrelaxationcharacteristicimpedance
机标分类号:TQ174O641.4TM282
在线出版日期:2024年7月3日
基金项目:省教育厅重点科研项目放电等离子体烧结BaTiO3-xBi(Ni0.5Zr0.5)O3陶瓷的介电和阻抗性能[
期刊论文]材料工程--2024, 52(5)肖长江马金明张群飞采用传统固相反应法合成BaTiO3-xBi(Ni0.5Zr0.5)O3粉体和放电等离子体烧结技术制备BaTiO3-xBi(Ni0.5Zr0.5)O3陶瓷,研究陶瓷的晶体结构、微观形貌、介电和阻抗性能.结果表明:BaTiO3-0.10Bi(Ni0.5Zr0.5)O3陶瓷具有钙钛矿型,...参考文献和引证文献
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        放电等离子体烧结BaTiO3-xBi(Ni0.5Zr0.5)O3陶瓷的介电和阻抗性能Dielectric and impedance properties of BaTiO3-xBi(Ni0.5Zr0.5)O3 ceramics prepared by spark plasma sintering

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