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R-curves in transformation toughened lead zirconate titanate

Rödel, Jürgen ; Seo, Yo-Han ; Benčan, Andreja ; Malič, Barbara ; Kosec, Marija ; Webber, Kyle G. (2013)
R-curves in transformation toughened lead zirconate titanate.
In: Engineering Fracture Mechanics, 100
doi: 10.1016/j.engfracmech.2012.06.023
Article, Bibliographie

Abstract

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.

Item Type: Article
Erschienen: 2013
Creators: Rödel, Jürgen ; Seo, Yo-Han ; Benčan, Andreja ; Malič, Barbara ; Kosec, Marija ; Webber, Kyle G.
Type of entry: Bibliographie
Title: R-curves in transformation toughened lead zirconate titanate
Language: English
Date: March 2013
Journal or Publication Title: Engineering Fracture Mechanics
Volume of the journal: 100
DOI: 10.1016/j.engfracmech.2012.06.023
Abstract:

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.

Uncontrolled Keywords: Lead zirconate titanate; Ferroelasticity; Transformation toughening; R-curve; Microstructure
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Elektromechanik von Oxiden
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
Date Deposited: 04 Apr 2013 09:31
Last Modified: 27 Feb 2014 14:39
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