Premium
Effect of Poling Direction on R ‐Curve Behavior in Lead Zirconate Titanate
Author(s) -
Santos e Lucato Sergio L.,
Lupascu Doru C.,
Rödel Jürgen
Publication year - 2000
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2000.tb01210.x
Subject(s) - poling , lead zirconate titanate , materials science , composite material , grain size , fracture toughness , zirconate , plateau (mathematics) , ceramic , toughness , fracture (geology) , mineralogy , ferroelectricity , titanate , dielectric , mathematics , chemistry , mathematical analysis , optoelectronics
R ‐curves of lead zirconate titanate (PZT) have been measured with compact tension (CT) specimens for different poling conditions and grain sizes. Depending on poling direction the plateau value of the R ‐curves ranged from 1.13 to 1.54 MPa·m 1/2 for a grain size of 6.4 μm and from 1.14 to 1.30 MPa·m 1/2 for a grain size of 5.2 μm. Poling in the thickness direction yielded the material with the highest fracture toughness while the direction parallel to the loading direction led to the lowest fracture toughness.