Two-phase PZT-epoxy piezoelectric composites and three phase PZT-epoxy-Al composites were fabricated using a poling voltage of 0.2 kV/mm. The influence of aluminum inclusion size (nano and micron) and (lead zirconate titanate) PZT volume fraction on the dielectric properties of the three phase PZT-epoxy-aluminum composites were experimentally investigated. In general, dielectric and piezoelectric properties of the PZT-epoxy matrix were improved with the addition of aluminum particles. Composites that were comprised of micron scale aluminum inclusions demonstrated higher piezoelectric d33-strain-coefficients, and higher dielectric loss compared to composites that were comprised of nanosize aluminum inclusions. Specifically, composites comprised of micron sized aluminum particles and PZT volume fractions of 20%, 30%, and 40% had dielectric constants equal to 405.7, 661.4, and 727.8 (pC/N), respectively, while composites comprised of nanosize aluminum particles with the same PZT volume fractions, had dielectric constants equal to 233.28, 568.81, and 657.41 (pC/N), respectively. The electromechanical properties of the composites are influenced by several factors: inclusion agglomeration, contact resistance between particles, and air voids. These composites may be useful for several applications: structural health monitoring, energy harvesting, and acoustic liners.
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October 2011
Research Papers
Influence of Al Particle Size and Lead Zirconate Titanate (PZT) Volume Fraction on the Dielectric Properties of PZT-Epoxy-Aluminum Composites
S. Banerjee,
S. Banerjee
Mechanical and Aerospace Engineering Department, Rutgers,
The State University of New Jersey
, Piscataway, NJ 08854-8058
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K. A. Cook-Chennault
K. A. Cook-Chennault
Mechanical and Aerospace Engineering Department, Rutgers,
The State University of New Jersey
, Piscataway, NJ 08854-8058; Center of Advanced Energy Systems, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8058
Search for other works by this author on:
S. Banerjee
Mechanical and Aerospace Engineering Department, Rutgers,
The State University of New Jersey
, Piscataway, NJ 08854-8058
K. A. Cook-Chennault
Mechanical and Aerospace Engineering Department, Rutgers,
The State University of New Jersey
, Piscataway, NJ 08854-8058; Center of Advanced Energy Systems, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8058J. Eng. Mater. Technol. Oct 2011, 133(4): 041016 (6 pages)
Published Online: October 20, 2011
Article history
Received:
March 14, 2011
Accepted:
July 22, 2011
Online:
October 20, 2011
Published:
October 20, 2011
Citation
Banerjee, S., and Cook-Chennault, K. A. (October 20, 2011). "Influence of Al Particle Size and Lead Zirconate Titanate (PZT) Volume Fraction on the Dielectric Properties of PZT-Epoxy-Aluminum Composites." ASME. J. Eng. Mater. Technol. October 2011; 133(4): 041016. https://doi.org/10.1115/1.4004812
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