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.
Received: 29 April 2008
Revised: 22 May 2008
Accepted manuscript online:
PACS:
81.40.Jj
(Elasticity and anelasticity, stress-strain relations)
Fund: 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).
Cite this article:
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) Enhanced mechanical behaviour of lead zirconate titanate piezoelectric composites incorporating zinc oxide nanowhiskers 2008 Chin. Phys. B 17 4323
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