Paper Title:
Lead-Free BSZT/Epoxy 1-3 Composites for Ultrasonic Transducer Applications
  Abstract

With high piezoelectric coefficient (d33> 300 pC/N) and electromechanical coupling factor (kt = 0.45), lead-free barium strontium zirconium titanate ((Ba0.95Sr0.05) (Zr0.05Ti0.95) O3, abbreviated as BSZT)was used to fabricate BSZT/epoxy 1-3 composites with different volume fractions of BSZT ranging from 0.55 - 0.85. The electromechanical properties of the 1-3 composites were determined by the resonance technique. It was found that the theoretical modeling of the 1-3 composites matches quite well with the measured material properties.The 1-3 composite with f = 0.65 was chosen to be fabricated as a transducer due to its comparatively high value of kt. The BSZT/epoxy 1-3 composite transducer demonstrates large bandwidth with good sensitivity, suggesting high potential in biomedical applications.

  Info
Periodical
Edited by
Lynn Khine and Julius M. Tsai
Pages
90-93
DOI
10.4028/www.scientific.net/AMR.254.90
Citation
S. T. F. Lee, K. H. Lam, X. M. Zhang, H. L. W. Chan, "Lead-Free BSZT/Epoxy 1-3 Composites for Ultrasonic Transducer Applications", Advanced Materials Research, Vol. 254, pp. 90-93, 2011
Online since
May 2011
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$32.00
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