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Strength and Fractography of Piezoceramic Multilayer Stacks

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Abstract:

Modern low-voltage piezoelectric actuators consist of a stack of piezoceramic layers (PZT) with metallic electrodes in between. Due to the use of these parts in automotive applications, a big but sensitive market is opened. During application mechanical stresses are an inherent loading of these electro-mechanical converter components. Therefore some strength of the actuators is necessary to guarantee a demanded life time. Bending and tensile tests were performed on commercial components to measure the strength in axial direction. Fracture surfaces were investigated with the methods of fractography to get information about the weakest links in the microstructure.

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Periodical:

Key Engineering Materials (Volume 290)

Pages:

46-53

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.290.46

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Online since:

July 2005

Authors:

Peter Supancic, Z. Wang, Walter Harrer, K. Reichmann, Robert Danzer

Keywords:

Fractography, Microstructure, Piezoceramic, Strength

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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