研究论文

电泳沉积PNN-PZT陶瓷厚膜及其电学性能研究

  • 曹瑞娟 ,
  • 李国荣 ,
  • 赵苏串 ,
  • 曾江涛 ,
  • 郑嘹赢 ,
  • 殷庆瑞
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  • (1.上海大学 物理系, 上海 200444; 2.中国科学院 上海硅酸盐研究所, 上海 200050)

收稿日期: 2009-02-10

  修回日期: 2009-04-27

  网络出版日期: 2010-04-22

Electrophoretic Deposition and the Electrical Properties of the PNN-PZT Thick Films

  • CAO Rui-Juan ,
  • LI Guo-Rong ,
  • ZHAO Su-Chuan ,
  • ZENG Jiang-Tao ,
  • ZHENG Liao-Ying ,
  • YIN Qing-Rui
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  • (1.Department of Physics, Shanghai University, Shanghai 200444, China; 2.Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200050, China)

Received date: 2009-02-10

  Revised date: 2009-04-27

  Online published: 2010-04-22

摘要

利用电泳沉积法分别在Al2O3/Pt和Pt金属基底上制备了厚度为10~40μm的0.3Pb(Ni1/3Nb2/3)O3-0.7Pb(Zr,Ti)O3(PNN-PZT)厚膜, 研究了pH值、Zeta电位与PNN-PZT悬浮液稳定性的关系, 探索了沉积电压、沉积时间与电泳沉积量的关系. 结果表明, 当添加少量分散剂聚乙二醇时, pH值在3.5~5.5较宽的范围内, 悬浮液具有较高的Zeta电位, 容易制得稳定的悬浮液. 沉积电压为21V, 沉积时间为5min时, 在Pt金属基底上电泳沉积得到的PNN-PZT厚膜, 经过1200℃烧结30min后, SEM显微结构分析表明, 厚膜致密, 晶粒得到充分生长. 电学性能测试显示此厚膜具有良好的铁电介电性能, 其剩余极化强度Pr可达20.8μC/cm2, 介电损耗tanδ为3.2%.

本文引用格式

曹瑞娟 , 李国荣 , 赵苏串 , 曾江涛 , 郑嘹赢 , 殷庆瑞 . 电泳沉积PNN-PZT陶瓷厚膜及其电学性能研究[J]. 无机材料学报, 2009 , 24(6) : 1183 -1188 . DOI: 10.3724/SP.J.1077.2009.01183

Abstract

0.3Pb(Ni1/3Nb2/3)O3-0.7Pb(Zr,Ti)O3 (PNN-PZT) thick films (10-40μm) were prepared by electrophoretic deposition method on Al2O3/Pt plates and Pt metallic foils. The effect of pH value on the stability of PNN-PZT suspensions was studied by measuring the zeta potential. The relationship among the deposition voltage, time and the quality of PNN-PZT films were investigated. When the pH value is in the range of 3.5-5.5, the suspension with the 2wt% PEG is stable. When the deposited voltage and time are 21V and 5min, respectively, the PNN-PZT thick films deposited on the Pt foil are uniform and free of crack. After sintering at 1200℃ for 30min, the PNN-PZT films with high density are obtained. The PNNPZT thick films show the high ferroelectric and dielectric properties with the remnant polarization of 20.8μC/cm2 and the loss tangent of about 3.2% at 1 kHz. And the frequency dependences of the dielectric spectra of the PNN-PZT thick films show the relaxor property. The piezoelectric constant calculated from the SV curve tested using the SPM is 67pm/V.

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