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铁电体电源中介质电阻特性及对输出电荷的影响

伍友成 刘高旻 戴文峰 郝世荣 贺红亮 邓建军

伍友成, 刘高旻, 戴文峰, 等. 铁电体电源中介质电阻特性及对输出电荷的影响[J]. 强激光与粒子束, 2018, 30: 035007. doi: 10.11884/HPLPB201830.170400
引用本文: 伍友成, 刘高旻, 戴文峰, 等. 铁电体电源中介质电阻特性及对输出电荷的影响[J]. 强激光与粒子束, 2018, 30: 035007. doi: 10.11884/HPLPB201830.170400
Wu Youcheng, Liu Gaomin, Dai Wenfeng, et al. Resistivity properties of ferroelectric ceramics and its effects on output charges in explosion-driven ferroelectric generator[J]. High Power Laser and Particle Beams, 2018, 30: 035007. doi: 10.11884/HPLPB201830.170400
Citation: Wu Youcheng, Liu Gaomin, Dai Wenfeng, et al. Resistivity properties of ferroelectric ceramics and its effects on output charges in explosion-driven ferroelectric generator[J]. High Power Laser and Particle Beams, 2018, 30: 035007. doi: 10.11884/HPLPB201830.170400

铁电体电源中介质电阻特性及对输出电荷的影响

doi: 10.11884/HPLPB201830.170400
基金项目: 国家高技术发展计划项目
详细信息
    作者简介:

    伍友成(1979—),男,博士研究生,副研究员,主要从事脉冲功率技术及应用研究;wuyoch@sina.com

  • 中图分类号: TN782

Resistivity properties of ferroelectric ceramics and its effects on output charges in explosion-driven ferroelectric generator

  • 摘要: 爆炸驱动铁电体脉冲电源利用铁电陶瓷在冲击压力作用下去极化释放电荷而产生电流,可以作为脉冲功率源的初始电源,也可直接驱动高阻抗负载产生脉冲高电压。通常情况下,铁电陶瓷可以看作理想的绝缘体,但在数GPa冲击波压力作用下,铁电陶瓷电阻率可能会明显下降并形成漏电导,使部分去极化释放电荷在铁电陶瓷内部流失,导致铁电陶瓷剩余极化电荷输出效率下降。以PZT95/5铁电陶瓷作为初始储能介质,以爆炸冲击波加载PZT95/5铁电陶瓷释放电荷对脉冲电容器充电,充电结束后电容器电压维持期间检测到明显的反向电流,根据铁电陶瓷输出电流和工作电压,得到冲击波作用过程中铁电陶瓷的瞬态电阻率曲线,并分析了电阻率下降对输出电荷的影响。进一步研究表明,冲击压力在铁电陶瓷边侧产生的稀疏波是引起电荷输出效率降低的主要因素,而铁电陶瓷电阻率下降对电荷输出效率的影响很小。
  • 图  1  铁电陶瓷瞬态电阻实验原理示意

    Figure  1.  Schematic of dynamic resistance experiment

    图  2  实验等效电路图

    Figure  2.  Equivalent circuit of PZT95/5 experiment

    图  3  铁电陶瓷动态电阻实验电压电流波形

    Figure  3.  Voltage and current in dynamic resistance experiment

    图  4  PZT95/5铁电陶瓷冲击压缩后动态电阻率曲线

    Figure  4.  Dynamic resistivity of shocked PZT95/5 in Explosion- driven Ferroelectric Generator(EDFEG)

    图  5  铁电陶瓷电阻不同电场实验原理示意

    Figure  5.  Schematic of E-field effect experiments

    图  6  电场实验第一发波形

    Figure  6.  Shot No.1 E-field experimental pulse waves

    图  7  电场实验第二发波形

    Figure  7.  Shot No.2 E-field experimental pulse waves

    图  8  不同电场实验第一发电阻率

    Figure  8.  Shot No.1 E-field experimental resistivity

    图  9  不同电场实验第二发电阻率

    Figure  9.  Shot No.2 E-field experimental resistivity

    表  1  电阻特性实验条件及实验数据

    Table  1.   Conditions and results of resistance characteristic experiment

    no. C1/nF Ucm/kV QC1/μC QC0/μC charge density/(μC·cm-2) charge loss/μC
    1-short short 0 507.5 0 37.6 0
    1-load 186 2.7 501.5 3.1 37.4 2.9(0.6%)
    2-short short 0 503.2 0 37.3 0
    2-load 92 5.3 487.5 8.3 36.7 7.4(1.5%)
    下载: 导出CSV
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出版历程
  • 收稿日期:  2017-10-13
  • 修回日期:  2017-11-22
  • 刊出日期:  2018-03-15

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