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Piezoelectric and mechanical properties of structured PZT-epoxy composites

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Author: James, N.K. · Ende, D.A. van den · Lafont, U. · Zwaag, S. van der · Groen, W.A.
Type:article
Date:2013
Source:Journal of Materials Research, 4, 28, 635-641
Identifier: 473212
Keywords: Electronics · Ceramic · Dielectric properties · Piezoelectric · Ceramic · Lead zirconium titanate · piezoelectric · Piezoelectric property · Piezoelectric voltage · Random composites · Theoretical models · Three-point bending test · Bending strength · Dielectric properties · Electrophoresis · Mechanical properties · Piezoelectricity · Volume fraction · Dielectric properties of solids · High Tech Systems & Materials · Industrial Innovation · Mechatronics, Mechanics & Materials · HOL - Holst · TS - Technical Sciences

Abstract

Structured lead zirconium titanate (PZT)-epoxy composites are prepared by dielectrophoresis. The piezoelectric and dielectric properties of the composites as a function of PZT volume fraction are investigated and compared with the corresponding unstructured composites. The effect of poling voltage on piezoelectric properties of the composites is studied for various volume fractions of PZT composites. The experimentally observed piezoelectric and dielectric properties have been compared with theoretical models. Dielectrophoretically structured composites exhibit higher piezoelectric voltage coefficients compared to 0-3 composites. Structured composites with 0.1 volume fraction of PZT have the highest piezoelectric voltage coefficient. The flexural strength and bending modulus of the structured and random composites were analyzed using three-point bending tests. Copyright © Materials Research Society 2013.