Residual stress relief due to fatigue in tetragonal lead zirconate titanate ceramics

Journal Article · Sun Jul 14 00:00:00 EDT 2013 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4812326· OSTI ID:22122803

Hall, D. A.; Mori, T. ^[1]; Comyn, T. P. ^[2]; Ringgaard, E. ^[3]; Wright, J. P. ^[4]

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1. School of Materials, University of Manchester, Grosvenor St., Manchester M1 7HS (United Kingdom)
2. Institute for Materials Research, Woodhouse Lane, University of Leeds, LS2 9JT (United Kingdom)
3. Meggitt Sensing Systems, Hejreskovvej 18A, 3490 Kvistgaard (Denmark)
4. ESRF, 6 Rue Jules Horowitz, BP-220, 38043 Grenoble Cedex (France)

High energy synchrotron XRD was employed to determine the lattice strain {epsilon}{l_brace}111{r_brace}and diffraction peak intensity ratio R{l_brace}200{r_brace}in tetragonal PZT ceramics, both in the virgin poled state and after a bipolar fatigue experiment. It was shown that the occurrence of microstructural damage during fatigue was accompanied by a reduction in the gradient of the {epsilon}{l_brace}111{r_brace}-cos{sup 2} {psi} plot, indicating a reduction in the level of residual stress due to poling. In contrast, the fraction of oriented 90 Degree-Sign ferroelectric domains, quantified in terms of R{l_brace}200{r_brace}, was not affected significantly by fatigue. The change in residual stress due to fatigue is interpreted in terms of a change in the average elastic stiffness of the polycrystalline matrix due to the presence of inter-granular microcracks.

• OSTI ID: 22122803
• Journal Information: Journal of Applied Physics, Vol. 114, Issue 2; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
CRACKS
CRYSTAL STRUCTURE
FATIGUE
FERROELECTRIC MATERIALS
FLEXIBILITY
MICROSTRUCTURE
POLARIZATION
POLYCRYSTALS
PZT
REDUCTION
RESIDUAL STRESSES
STRAINS
TETRAGONAL LATTICES
X-RAY DIFFRACTION