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Fabrication and Evaluation of PZT/Ag Piezoelectric Composites and Graded Actuator

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Abstract:

Homogeneous PZT/Ag composites and compositionally graded PZT/Ag actuators were fabricated and evaluated in this work. The piezoelectric constant decreases gradually and the dielectric constant increases significantly with an increase in silver content of the PZT/Ag composites. The fracture toughness of the PZT/Ag composites is enhanced with addition of the silver powders. Based on the corresponding piezoelectric properties of the monolithic PZT/Ag composites, a graded material with symmetric silver compositions from 1 to 10 vol % then inversely to 1 vol % was successfully fabricated by conventional sintering. This study indicates that the PZT/Ag composites can be used to acting as bimorph actuator materials.

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Periodical:

Key Engineering Materials (Volumes 280-283)

Pages:

1913-1916

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.280-283.1913

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Online since:

February 2007

Authors:

Hai Long Zhang, Jing Feng Li

Keywords:

Actuator, Piezoelectric Ceramic Bimorph, PZT/Ag Composite

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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