A resistivity gradient piezoelectric FGM actuator

Abstract

Abstract: A resistivity gradient actuator based on lead zirconate titanate ceramics was successfully developed and the bending deflections up to 140 mu m were obtained. The actuator material was a matrix of PZT ceramic into which smooth gradient of piezoelectric activity was introduced. The application of an electric field then causes the actuator to bend due to differential strains induced by the piezoelectric effect. The resistivity gradient of the actuator was achieved by doping PZT with suitable donor and acceptor dopants. PZT powder was modified and synthesized by using two stage powder fabrication method. The actuator was fabricated by uniaxial pressing followed by isostatic pressing with two layers of different resistivities.

Key words:

S. U.Adikary, Zhongyan MENG, Dengren JIN. A resistivity gradient piezoelectric FGM actuator[J]. J Mater Sci Technol, 2000, 16(04): 383-386.

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A resistivity gradient piezoelectric FGM actuator

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