Fabrication of high density, fine-grained PZT ceramics using a post-sinter HIP treatment

Author

Millar, C.E. ; Andersen, B. ; Ringgård, E. ; Wolny, W. ; Ricote, J. ; Pardo, L.

Author_Institution

Ferroperm AS, Kvistgard, Denmark

fYear

1991

fDate

33457

Firstpage

118

Lastpage

121

Abstract

For many applications, such as medical array transducers, the frequency of use of ceramics is limited by their grain size and porosity content. Here, the microstructure of two commercial soft PZT ceramics (with ε_r of 1800 and 4000) is optimised through a combined sintering and HIP study. The study includes the effect of sintering temperature (T=1100 to 1260°C) and HIP conditions (T=1000°C, P=50 to 200 MPa and t=1 to 4 h) on the microstructure and dielectric and piezoelectric properties. The properties obtained are compared with those of the conventionally prepared ceramics

Keywords

crystal microstructure; dielectric properties; ferroelectric materials; grain size; hot pressing; lead compounds; piezoceramics; piezoelectricity; porosity; sintering; 1 to 4 h; 1000 C; 1100 to 1260 C; 50 to 200 MPa; HIP study; PZT; PbZrO3TiO3; dielectric properties; fine-grained ceramics; grain size; medical array transducers; microstructure; piezoelectric properties; porosity content; sintering; Bioceramics; Biomedical transducers; Ceramics; Dielectrics; Fabrication; Frequency; Grain size; Hip; Microstructure; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 1994.ISAF '94., Proceedings of the Ninth IEEE International Symposium on

Conference_Location

University Park, PA

Print_ISBN

0-7803-1847-1

Type

conf

DOI

10.1109/ISAF.1994.522313

Filename

522313