中国物理B ›› 2008, Vol. 17 ›› Issue (11): 4323-4327.doi: 10.1088/1674-1056/17/11/060

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Enhanced mechanical behaviour of lead zirconate titanate piezoelectric composites incorporating zinc oxide nanowhiskers

林海波, 曹茂盛, 袁 杰, 王大伟, 赵全亮, 王富耻   

  1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
  • 收稿日期:2008-04-29 修回日期:2008-05-22 出版日期:2008-11-20 发布日期:2008-11-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 50572010, 50742007 and 10672020), the National Defense Foundation of China (Grant No 401050301), and the Scientific Project of 863 of China (Grant No 2007AA03Z103).

Enhanced mechanical behaviour of lead zirconate titanate piezoelectric composites incorporating zinc oxide nanowhiskers

Lin Hai-Bo (林海波), Cao Mao-Sheng (曹茂盛), Yuan Jie (袁 杰), Wang Da-Wei (王大伟), Zhao Quan-Liang (赵全亮), Wang Fu-Chi (王富耻)   

  1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
  • Received:2008-04-29 Revised:2008-05-22 Online:2008-11-20 Published:2008-11-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 50572010, 50742007 and 10672020), the National Defense Foundation of China (Grant No 401050301), and the Scientific Project of 863 of China (Grant No 2007AA03Z103).

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摘要： This paper reports that the lead zirconate titanate (PZT) piezoelectric composites incorporating zinc oxide nanowhiskers (ZnO$_{\rm w})$ were prepared by the conventional solid state processing. The whisker-dispersed PZT composites (PZT/ZnO$_{\rm w})$ presented a significant enhancement in the mechanical properties such as Young's modulus, tensile strength and compressive strength. Especially, the compressive strength increased from 153\,MPa for the PZT to 228\,MPa for the PZT/ZnO$_{\rm w}$ composites. The reinforcement mechanism in strength of the composites was discussed. The mechanical quality factors of the PZT/ZnO$_{\rm w }$ composites increased considerably, while the piezoelectric constants and electromechanical coupling coefficient decreased slightly. The composites with good electrical and excellent mechanical properties are promising for further applications.

关键词: ZnO nanowhisker, composites, mechanical property, piezoelectrics

Abstract: This paper reports that the lead zirconate titanate (PZT) piezoelectric composites incorporating zinc oxide nanowhiskers (ZnO$_{\rm w})$ were prepared by the conventional solid state processing. The whisker-dispersed PZT composites (PZT/ZnO$_{\rm w})$ presented a significant enhancement in the mechanical properties such as Young's modulus, tensile strength and compressive strength. Especially, the compressive strength increased from 153 MPa for the PZT to 228 MPa for the PZT/ZnO$_{\rm w}$ composites. The reinforcement mechanism in strength of the composites was discussed. The mechanical quality factors of the PZT/ZnO$_{\rm w }$ composites increased considerably, while the piezoelectric constants and electromechanical coupling coefficient decreased slightly. The composites with good electrical and excellent mechanical properties are promising for further applications.

Key words: ZnO nanowhisker, composites, mechanical property, piezoelectrics

中图分类号:  (Elasticity and anelasticity, stress-strain relations)

  • 81.40.Jj
62.20.F- (Deformation and plasticity) 77.65.Bn (Piezoelectric and electrostrictive constants) 77.84.Lf (Composite materials) 81.16.-c (Methods of micro- and nanofabrication and processing) 81.40.Lm (Deformation, plasticity, and creep)