Next Article in Journal / Special Issue
Characterization and Testing of an Electrorheological Fluid Valve for Control of ERF Actuators
Previous Article in Journal / Special Issue
A Compact Ionic Polymer Metal Composite (IPMC) System with Inductive Sensor for Closed Loop Feedback
Article Menu

Export Article

Open AccessArticle
Actuators 2015, 4(2), 127-134; doi:10.3390/act4020127

Ultrasonic Transducer Fabricated Using Lead-Free BFO-BTO+Mn Piezoelectric 1-3 Composite

1
The Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen 518057, China
2
Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China
3
College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Delbert Tesar
Received: 1 April 2015 / Revised: 12 May 2015 / Accepted: 27 May 2015 / Published: 29 May 2015
(This article belongs to the Special Issue Feature Papers)
View Full-Text   |   Download PDF [431 KB, uploaded 29 May 2015]   |  

Abstract

Mn-doped 0.7BiFeO3-0.3BaTiO3 (BFO-0.3BTO+Mn 1% mol) lead-free piezoelectric ceramic were fabricated by traditional solid state reaction. The phase structure, microstructure, and ferroelectric properties were investigated. Additionally, lead-free 1–3 composites with 60% volume fraction of BFO-BTO+Mn ceramic were fabricated for ultrasonic transducer applications by a conventional dice-and-fill method. The BFO-BTO+Mn 1-3 composite has a higher electromechanical coupling coefficient (kt = 46.4%) and lower acoustic impedance (Za ~ 18 MRayls) compared with that of the ceramic. Based on this, lead-free piezoelectric ceramic composite, single element ultrasonic transducer with a center frequency of 2.54 MHz has been fabricated and characterized. The single element transducer exhibits good performance with a broad bandwidth of 53%. The insertion loss of the transducer was about 33.5 dB. View Full-Text
Keywords: lead-free ceramic; 1-3 composite; ultrasonic transducer lead-free ceramic; 1-3 composite; ultrasonic transducer
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Chen, Y.; Mei, K.; Wong, C.-M.; Lin, D.; Chan, H.L.W.; Dai, J. Ultrasonic Transducer Fabricated Using Lead-Free BFO-BTO+Mn Piezoelectric 1-3 Composite. Actuators 2015, 4, 127-134.

Show more citation formats Show less citations formats

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Actuators EISSN 2076-0825 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top