Aging behavior and electrical properties of low-temperature sintered (Ba, Ca)(Ti, Zr)O3-Ba(Cu, W)O3 ceramics and plate loudspeaker

Xiaolian Chao, Juanjuan Wang, Jun Pu, Shujun Zhang, Zupei Yang

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Lead-free (1 - x)wt.% (Ba0.85Ca0.15)(Zr0.10Ti0.90)O3 - x wt.% (Ba(Cu0.5W0.5)O3 (BCZT - x wt.% BCW) piezoelectric ceramics were prepared by solid-state reaction. The phase structure of the ceramics showed that the orthorhombic-tetragonal phase boundary was identified in the range of 1.2 ≤ x ≤ 1.6 wt.%. The dense microstructure and optimal electrical properties of the ceramics were obtained at x = 1.2 wt.%. Fatigue behavior of the ceramics was also investigated as a function of temperature and keeping time, where the BCZT - 1.2 wt.% BCW materials were found to possess improved fatigue characteristic. In addition, the sound pressure level (SPL) of 16.0 mm length × 16.0 mm width × 0.1 mm piezoelectric loudspeakers using lead-free BCZT ceramics with 1.2 wt.% BCW content at drive voltage of 10-20 V was more than 80 dB at frequency of 2.2-20.0 kHz. These results indicated that the 98.8 wt.% BCZT - 1.2 wt.% BCW ceramics was potential for piezoelectric loudspeaker applications.

Original languageEnglish (US)
Pages (from-to)9-19
Number of pages11
JournalSensors and Actuators, A: Physical
StatePublished - Jan 1 2016

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering


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