Lead-Free KNN-Based Textured Ceramics for High-Frequency Ultrasonic Transducer Application

0.45 Na 0.5 Li 0.05 )NbO 3 -0.075BaZrO 3-0.01(Bi 0.5 Na 0.5 )TiO 3 textured piezo- electric ceramics have high piezoelectric response, superior thermal stability, and excellent fatigue resistance, which are promising for devices applications

Yi Quan; Chunlong Fei; Wei Ren; Lingyan Wang; Gang Niu; Jinyan Zhao; Jian Zhuang; Junshan Zhang; Kun Zheng; Pengfei Lin; Xinhao Sun; Qiang Chen; Zuo-Guang Ye; Tomoaki Karaki

2020

Scholarcy highlights

  • 0.45 Na 0.5 Li 0.05 )NbO 3 -0.075BaZrO 3-0.01(Bi 0.5 Na 0.5 )TiO 3 textured piezo- electric ceramics have high piezoelectric response, superior thermal stability, and excellent fatigue resistance, which are promising for devices applications
  • The KNLN-BZ-BNT textured ceramics were prepared by the tape-casting method
  • The tightly focused transducers have a center frequency higher than 80 MHz and a -6-dB fractional bandwidth of 52%. Such transducers were built for an f-number close to 1, and the desired focal depth was achieved by press-focusing technology associated with a set of customer design fixture
  • These promising results demonstrate that the lead-free KNLN-BZ-BNT textured ceramic is a good candidate for high-frequency ultrasonic transducer applications." /> 0.45 Na 0.5 Li 0.05 )NbO 3 -0.075BaZrO 3-0.01(Bi 0.5 Na 0.5 )TiO 3 textured piezo- electric ceramics have high piezoelectric response, superior thermal stability, and excellent fatigue resistance, which are promising for devices applications

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