R-curves. in transformation toughened lead zirconate titanate

被引：7

作者：

Roedel, Juergen ^{[1
]}

Seo, Yo-Han ^{[1
]}

Bencan, Andreja ^{[1
]}

Malic, Barbara ^{[2
]}

Kosec, Marija ^{[2
]}

Webber, Kyle G. ^{[1
]}

机构：

[1] Tech Univ Darmstadt, Inst Mat Sci, D-64287 Darmstadt, Germany

[2] Jozef Stefan Inst, Ljubljana 1000, Slovenia

来源：

ENGINEERING FRACTURE MECHANICS | 2013年 / 100卷

关键词：

Lead zirconate titanate; Ferroelasticity; Transformation toughening; R-curve; Microstructure; ELECTRIC-FIELD; CRACK-GROWTH; BEHAVIOR; STRESS; ZONE;

D O I：

10.1016/j.engfracmech.2012.06.023

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Composites from lead zirconate titanate (PZT) and yttria stabilized zirconia were manufactured to assess cracking and R-curve behavior in compact tension specimens. Additions of zirconia led to a reduction in PZT grain size and shifted the fracture behavior from intergranular fracture to intragranular fracture. The R-curves exhibited higher starting values, a steeper slope and a higher plateau value with increasing content of zirconia, albeit the effects on the toughness values were not more than 20%. The results are rationalized through increased crack tip toughness, reduced ferroelastic toughening and enhanced transformation toughening. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：86 / 91

页数：6

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