A resistivity gradient piezoelectric FGM actuator

Citation
Su. Adikary et al., A resistivity gradient piezoelectric FGM actuator, J MAT SCI T, 16(4), 2000, pp. 383-386
Citations number
11
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN journal
1005-0302 → ACNP
Volume
16
Issue
4
Year of publication
2000
Pages
383 - 386
Database
ISI
SICI code
1005-0302(200007)16:4<383:ARGPFA>2.0.ZU;2-A
Abstract
A resistivity gradient actuator based on lead zirconate titanate ceramics w as successfully developed and the bending deflections up to 140 mu m were o btained. The actuator material was a matrix of PZT ceramic into which smoot h gradient of piezoelectric activity was introduced. The application of an electric field then causes the actuator to bend due to differential strains induced by the piezoelectric effect. The resistivity gradient of the actua tor was achieved by doping PZT with suitable donor and acceptor dopants. PZ T powder was modified and synthesized by using two stage powder fabrication method. The actuator was fabricated by uniaxial pressing followed by isost atic pressing with two layers of different resistivities.