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Chinese Journal of High Pressure Physics  > 2014  >  28(4): 399-406.
ZHANG Pan, JIANG Yi-Xuan, WANG Xing-Zhe, HE Hong-Liang. Analysis of Depolarization and Discharge Process of PZT 95/5 Ferroelectric Ceramic under Normal Shock Loading[J]. Chinese Journal of High Pressure Physics, 2014, 28(4): 399-406. doi: 10.11858/gywlxb.2014.04.003
Citation: ZHANG Pan, JIANG Yi-Xuan, WANG Xing-Zhe, HE Hong-Liang. Analysis of Depolarization and Discharge Process of PZT 95/5 Ferroelectric Ceramic under Normal Shock Loading[J]. Chinese Journal of High Pressure Physics, 2014, 28(4): 399-406. doi: 10.11858/gywlxb.2014.04.003
shu

Analysis of Depolarization and Discharge Process of PZT 95/5 Ferroelectric Ceramic under Normal Shock Loading

doi: 10.11858/gywlxb.2014.04.003
  • 1.

    Key Laboratory of Mechanics on Western Disaster and Environmental, Ministry of Education College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China

  • 2.

    National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621999, China

  • Received Date: 03 Sep 2012
  • Rev Recd Date: 22 Nov 2012
    Abstract
  • Bound charges of poled PZT 95/5 ferroelectric ceramics will be released under shock wave loading to form a high-power electrical energy output.For a shock loading perpendicular to the polarization direction, a model describing the depolarization and discharge process of PZT 95/5 ceramic by normal shock-wave is proposed in this paper.The effects of shock-wave pressure on the wave velocity and depolarization phase transition process were considered systematically.The depoling process of PZT 95/5 ferroelectric ceramics was analyzed by a parallel circuit with a current source, a capacitance and a conductance.The changes in the dielectric constant and conductivity during shock loading were taken into account.The output current characteristics of ferroelectric ceramics discharging process under short circuit and resistive load conditions, and the effects of changes in the dielectric constant and conductivity were analyzed and compared with the experimental results.The results show that the present theoretical model predicts well the discharge process of PZT95/5 ferroelectric ceramics under shock compression.

     

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