Effect of domain wall characteristics on material properties of lead zirconate titanate piezoelectric ceramics

Mitsuhiro Okayasu, Y. Sato, M. Mizuno, T. Shiraishi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

To better understand the material properties of lead zirconate titanate (PZT) ceramics, the influence of domain wall characteristics on the electrical and mechanical properties of PZT ceramics has been investigated. To obtain various domain wall characteristics, the poling process was carried out with different patterns with respect to the PZT ceramic. The domain walls were aligned in the PZT ceramic in the direction perpendicular to the poling direction. Such domain wall characteristic produced different crack growth behaviours. The crack growth occurred mainly along the domain walls of {110} for a 31 (crack growth direction perpendicular to the poling direction) because of the high stress concentration between the domain walls. In contrast, the crack propagated along both domain walls and grain boundaries for a 33 (crack growth direction parallel to the poling direction), leading to high crack growth resistance and good mechanical properties. The fracture toughness K IC values for the PZT ceramics in the a 31 and a 33 directions were about 0.5 and 2.6 MPa m 1/2 respectively. It also appeared that the domain walls collapsed when a number of poling processes are conducted along different directions. These PZT ceramics had high mechanical properties due to the low stress concentrations.

Original languageEnglish
Pages (from-to)187-195
Number of pages9
JournalAdvances in Applied Ceramics
Volume111
Issue number4
DOIs
Publication statusPublished - May 2012
Externally publishedYes

Fingerprint

Piezoelectric ceramics
Domain walls
Materials properties
Crack propagation
Mechanical properties
Stress concentration
Direction compound
lead titanate zirconate
Fracture toughness
Grain boundaries
Electric properties
Cracks

Keywords

  • Domain wall
  • Electrical property
  • Lead zirconate titanate ceramic
  • Mechanical property
  • Piezoelectric ceramic

ASJC Scopus subject areas

  • Ceramics and Composites
  • Industrial and Manufacturing Engineering

Cite this

Effect of domain wall characteristics on material properties of lead zirconate titanate piezoelectric ceramics. / Okayasu, Mitsuhiro; Sato, Y.; Mizuno, M.; Shiraishi, T.

In: Advances in Applied Ceramics, Vol. 111, No. 4, 05.2012, p. 187-195.

Research output: Contribution to journalArticle

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