Fatigue crack growth in ferroelectrics under electrical loading
Journal
Journal of the European Ceramic Society
Journal Volume
26
Journal Issue
1-2
Pages
95-109
Date Issued
2006
Author(s)
Abstract
Fatigue crack growth is investigated in the polycrystalline ferroelectrics PZT-5H and PLZT 8/65/35 under electrical loading. The fatigue cracks exhibit features such as bifurcation and tunnelling, followed by crack arrest. The nature of the resulting damage differs in the two materials: in PZT-5H a narrow zone of intergranular cracks propagates across the specimen, wedging the crack surfaces apart. In PLZT 8/65/35 a broad microcracked band spreads across the specimen. The rate of crack growth is found to correlate well with the amplitude of electric displacement. © 2004 Elsevier Ltd. All rights reserved.
Type
journal article