Electric Loading-Induced Cracking Behavior at Electrode Edges in PZT Ceramics
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Published:2007-08
Issue:
Volume:352
Page:267-270
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ISSN:1662-9795
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Container-title:Key Engineering Materials
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language:
-
Short-container-title:KEM
Author:
Kusukawa Kazuhiro1,
Shiozaki Yohei1
Affiliation:
1. Kochi University of Technology
Abstract
Fatigue damage behavior under repeated electric loading was investigated on two kinds of
PZT ceramics with discontinuous electrodes. Intergranular cracking was observed at the electrode
edge in soft PZT under electric fields greater than ±400 V/mm. However, under the same loading
conditions, no damage was observed in hard PZT. When cracking occurred, permittivity of specimens
decreased with the number of cycles corresponding to the amount of mechanical damage. FEM
analyses of the electroelastic field of the specimens showed that cracking due to cyclic electric loading
was related to 180˚ domain switching caused by concentrated electroelastic field.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Cited by
2 articles.
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1. ELECTRIC-FIELD-INDUCED CRACK GROWTH AT ELECTRODE EDGE IN PIEZOELECTRIC CERAMICS;International Journal of Modern Physics: Conference Series;2012-01
2. Mechanical Properties of Ferro-Piezoceramics;Multifunctional Polycrystalline Ferroelectric Materials;2011