Title :
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
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 εr 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;
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
DOI :
10.1109/ISAF.1994.522313
