Recent advances in ceramic-polymer composite electrets

Recent work on ceramic-polymer composites for piezoelectric and pyroelectric applications is presented with special regard to the production and characterisation of new composite materials as well as two new applications of these composite materials. One of these composites is made using ceramic pow...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation 2004-02, Vol.11 (1), p.35-40
Main Authors: Dias, C.J., Igreja, R., Marat-Mendes, R., Inacio, P., Marat-Mendes, J.N., Das-Gupta, D.K.
Format: Article
Language:English
Subjects:
Ceramic powders
Ceramics
Composite materials
Crystallization
Electrets
Morphology
Nanocomposites
Piezoelectricity
Powders
Production
Pyroelectricity
Sol gel process
Stoichiometry
Temperature control
Temperature distribution
Temperature sensors
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Recent work on ceramic-polymer composites for piezoelectric and pyroelectric applications is presented with special regard to the production and characterisation of new composite materials as well as two new applications of these composite materials. One of these composites is made using ceramic powders obtained using the sol-gel technique. This technique allows a better control of the stoichiometry as well as a lower temperature of crystallisation as compared with the conventional mixed oxides route. A better control of powder morphology also produces ceramic grains in the submicron range enabling the production of nanocomposites with electroactive properties. A second type of composite is reported using high temperature polymer PEEK, thus extending the temperature range of common electroactive composite materials. Finally the use of these materials is demonstrated in two piezoelectric applications, an angular acceleration accelerometer and an acoustic emission sensor.
ISSN:1070-9878
1558-4135
DOI:10.1109/TDEI.2004.1266314