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Title: Biaxial Flexural Strength of Poled Lead Zirconate Titanate under High Electric Field with Extended Field Range

Abstract

In the present work, as-received poled lead zirconate titanate, or PZT 5A, was examined using ball-on-ring (BoR) mechanical testing coupled with an electric field. Electric fields in the range of 4Ec (Ec, coercive field) with controlled loading paths were applied, and mechanical tests at a substantial number of characteristic electric field levels were conducted. Commercial electronic liquid FC-40 was used to prevent the setup from dielectric breakdown under a high electric field. Weibull strength distribution was used to interpret the mechanical strength data. The data showed that the strength levels of the PZT-5A tested under OC (open circuit) in air and in FC-40 were almost the same. It was further revealed that , for the studied cases, the effect of loading history on the biaxial flexural strength of the PZT was significant in -Ec, but not in OC or zero field as well as 4Ec . An asymmetry V curve was observed for the characteristic strength-electric field graph, and the bottom of V curve was located near the negative coercive field. Microscopy analysis showed that surface-located volume-distributed flaws were the strength limiter and responsible for the failure of the tested PZT under electromechanical loadings.

Authors:
 [1];  [1];  [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1055534
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Ceramics International
Additional Journal Information:
Journal Volume: 39; Journal Issue: 2; Journal ID: ISSN 0272-8842
Country of Publication:
United States
Language:
English

Citation Formats

Zhang, Kewei, Zeng, Fan W, Wang, Hong, and Lin, Hua-Tay. Biaxial Flexural Strength of Poled Lead Zirconate Titanate under High Electric Field with Extended Field Range. United States: N. p., 2013. Web. doi:10.1016/j.ceramint.2012.08.054.
Zhang, Kewei, Zeng, Fan W, Wang, Hong, & Lin, Hua-Tay. Biaxial Flexural Strength of Poled Lead Zirconate Titanate under High Electric Field with Extended Field Range. United States. doi:10.1016/j.ceramint.2012.08.054.
Zhang, Kewei, Zeng, Fan W, Wang, Hong, and Lin, Hua-Tay. Tue . "Biaxial Flexural Strength of Poled Lead Zirconate Titanate under High Electric Field with Extended Field Range". United States. doi:10.1016/j.ceramint.2012.08.054.
@article{osti_1055534,
title = {Biaxial Flexural Strength of Poled Lead Zirconate Titanate under High Electric Field with Extended Field Range},
author = {Zhang, Kewei and Zeng, Fan W and Wang, Hong and Lin, Hua-Tay},
abstractNote = {In the present work, as-received poled lead zirconate titanate, or PZT 5A, was examined using ball-on-ring (BoR) mechanical testing coupled with an electric field. Electric fields in the range of 4Ec (Ec, coercive field) with controlled loading paths were applied, and mechanical tests at a substantial number of characteristic electric field levels were conducted. Commercial electronic liquid FC-40 was used to prevent the setup from dielectric breakdown under a high electric field. Weibull strength distribution was used to interpret the mechanical strength data. The data showed that the strength levels of the PZT-5A tested under OC (open circuit) in air and in FC-40 were almost the same. It was further revealed that , for the studied cases, the effect of loading history on the biaxial flexural strength of the PZT was significant in -Ec, but not in OC or zero field as well as 4Ec . An asymmetry V curve was observed for the characteristic strength-electric field graph, and the bottom of V curve was located near the negative coercive field. Microscopy analysis showed that surface-located volume-distributed flaws were the strength limiter and responsible for the failure of the tested PZT under electromechanical loadings.},
doi = {10.1016/j.ceramint.2012.08.054},
journal = {Ceramics International},
issn = {0272-8842},
number = 2,
volume = 39,
place = {United States},
year = {2013},
month = {1}
}