Low-temperature sintering and properties of (Pb, Ba, Sr)(Zr, Ti, Sb)O-3 piezoelectric ceramics using sintering aids

Citation
T. Hayashi et al., Low-temperature sintering and properties of (Pb, Ba, Sr)(Zr, Ti, Sb)O-3 piezoelectric ceramics using sintering aids, JPN J A P 1, 38(9B), 1999, pp. 5549-5552
Citations number
5
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Volume
38
Issue
9B
Year of publication
1999
Pages
5549 - 5552
Database
ISI
SICI code
0021-4922(199909)38:9B<5549:LSAPO(>2.0.ZU;2-Y
Abstract
Low-temperature sintering of (Pb0.86Ba0.04Sr0.12)(Zr0.56Ti0.44Sb0.02)O-3 (P BSZT) powders was investigated using Pb5Ge3O11 (PGO) or LiBiO2 (LBiO) as si ntering aids. 1 wt% PGO or 1 wt% LBiO-added PBSZT powders could be densifie d into sintered bodies at 800 degrees C for 2 h with a relative density of approximately 96%. The addition of PGO or LBiO significantly improved the s interability of PBSZT powders, resulting in a reduction of sintering temper ature by about 200 degrees C. Dielectric and piezoelectric properties of LB iO-added PBSZT ceramics were superior to those fabricated without sintering aids. However. the addition of PGO was not effective in improving the diel ectric and piezoelectric properties. This may be attributable to the micros tructural change involving the solid solution reaction between the PBSZT ma trix and the PGO additive. The 1 wt% LBiO-added PBSZT bodies sintered at 10 00 degrees C exhibited a dielectric constant of 2600, remanent polarization of 14.7 mu C/cm(2), and longitudinal strain of 0.24%.