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Innovative Process Development of Sx2(Nb0.5Ta0.5)O7/PVDF Hybrid Materials for Sensors and Actuators

Published online by Cambridge University Press:  10 February 2011

W. Kowfael ,
V. Chellappa ,
J. C. Wither ,
M. J. Crocker  and
B. Wada
W. Kowfael
Affiliation:
MER Corp., Tucson, AZ
V. Chellappa
Affiliation:
MER Corp., Tucson, AZ
J. C. Wither
Affiliation:
MER Corp., Tucson, AZ
M. J. Crocker
Affiliation:
Mechanical Engineering, Auburn University, Auburn, AL
B. Wada
Affiliation:
JPL, Pasadena, CA
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Abstract

Over the past several years interest in adaptive ‘smart'materials development has gained momentum. Smart structures utilize both polymeric sensors and lead-based piezo-ceramic actuators. This paper addresses the development of an alternative smart material which consists of a novel lead-free piezo-ceramic/PVDF hybrid composite, to be used as a single component system capable of performing multiple tasks. A lead-free controlled porosity perovskite ceramic of the type A2B2O7 (Sr2 (Nb.5Ta.5)2O7 was developed utilizing hot forging. Long, oriented grains along the x-y plane, perpendicular to the forging direction were obtained in the ceramics. PVDF was subsequently infiltrated into the porous piezo-ceramic resulting in a three dimensional architecture in which the piezo-ceramic is oriented perpendicular to the PVDF. It is anticipated that manufacturability combined with the ease of functional tailorability of such a class of lead-free hybrid materials can be useful in a variety of smart structures applications.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 459: Symposium Y – Materials for Smart Systems II , 1996 , 65
Copyright
Copyright © Materials Research Society 1997

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References

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