The aging behavior of thin piezoceramic plate

Author

Liao, Jie-Hau ; Cheng, Syh-yuh ; Wang, Chien-Min

Author_Institution

Mater. Res. Labs., Ind. Technol. Res. Inst., Hsinchu, Taiwan

fYear

1990

fDate

6-8 Jun 1990

Firstpage

443

Lastpage

446

Abstract

Compositions were based on the Pb[(Zr,Ti)_1-x(Mn,Sb,Nb) _x]O₃ system with x from 0.06 to 0.2. Pb-site vacancy is liable to occur on the surface of a sintered PZT plate. A surface layer composed of surface states is generated and plays an important role for a plate with a thickness smaller than 250 μm. Because the intrinsic property is nonpiezoelectric, the surface layer tends to decrease piezoelectric properties and aging rate. The influence of the surface state on aging is by way of the induced space charge, which gradually disappears and has no effect on aging rate after long time (>100-h) periods. Surface-polishing can degrade the PbO-deficient surface layer. A longer sintering duration enhances the surface effect through more Pb-site vacancy generation. The increase of the x value tends to shift phase toward the rhombohedral phase and reduces the aging rate

Keywords

ageing; ceramics; lead compounds; piezoelectric materials; space charge; vacancies (crystal); PbO-deficient surface layer; PbTiO₃ZrO₃MnO₃SnO₃NbO ₃; aging rate; induced space charge; piezoelectric properties; rhombohedral phase; sintering; surface layer; thin piezoceramic plate; vacancy; Additives; Aging; Ceramics; Charge measurement; Current measurement; Lead; Piezoelectric materials; Space charge; Temperature measurement; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 1990., IEEE 7th International Symposium on

Conference_Location

Urbana-Champaign, IL

Print_ISBN

0-7803-0190-0

Type

conf

DOI

10.1109/ISAF.1990.200283

Filename

200283