Fatigue crack growth in ferroelectrics under electrical loading

被引：57

作者：

Shieh, J

Huber, JE

Fleck, NA

机构：

[1] Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England

[2] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei, Taiwan

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2006年 / 26卷 / 1-2期

关键词：

electroceramics; ferroelectricity; fatigue; PZT; PLZT;

D O I：

10.1016/j.jeurceramsoc.2004.10.002

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：95 / 109

页数：15

共 30 条

[1] ELECTRIC-FIELD-INDUCED FATIGUE-CRACK GROWTH IN PIEZOELECTRICS [J].