Affiliation:
1. Murata Manufacturing Co., Ltd.
2. Suzuka National College of Technology
3. Meijo University
Abstract
Fatigue tests on lead zirconate titanate (PZT) were performed by using single-edge-V-notched specimens under cyclic mechanical loading with or without superposition of a DC electric field. Fatigue life was prolonged by applying a DC electric field to the PZT ceramics. To estimate the domain contribution, fatigue tests on barium strontium titanate (BST) ceramics in both ferroelectric and paraelectric phase were carried out. The fatigue life of the ferroelectric phase was much shorter than that of the paraelectric phase. Comparing the fatigue lives of two PZT ceramics with different values of coercive electric field (Ec) revealed that the fatigue life of the PZT with higher Ec is about one order of magnitude longer than that with lower Ec when the stress-intensity factor of fatigue test is low. It is therefore concluded that non-180°domain switching probably deteriorates the fatigue life of ferroelectric ceramics.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference7 articles.
1. K. Mehta and A. V. Viar: J. Am. Ceram. Soc. Vol. 73 (1990), p.567.
2. T. Sakai, M. Ishikiriyama, and R. Shimazaki: Jpn. J. Appl. Phys. Vol. 31 (1992), p.3051.
3. H. Makino and N. Kamiya: Jpn. J. Appl. Phys. Vol. 37 (1998), p.5301.
4. K. Shirakihara: Ph. D thesis (Nagoya University, Japan 2003).
5. H. Nakamura and T. Horikawa: Fatigue Strength of Metal and Application to Fatigue Strength Desin, edtied by Corona publishing Co., LTD., Japan (2008).
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