DOI QR코드

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Piezoelectric and Dielectric Properties of PMN-PNN-PZT Ceramics for Ultrasonic Generator with Calcination Temperature

하소온도변화에 따른 초음파절삭기용 PMN-PNN-PZT 세라믹스의 압전 및 유전 특성

  • Received : 2016.12.24
  • Accepted : 2017.01.18
  • Published : 2017.03.01

Abstract

In this paper, $Pb(Mn_{1/3}Nb_{2/3})_{0.07}(Ni_{1/3}Nb_{2/3})_{0.10}(Zr_{0.5}Ti_{0.5})_{0.83}O_3$ ceramics were fabricated by the conventional solid state method to obtain excellent dielectric properties for ultrasonic generators. The effects of 2nd calcination temperature on their microstructure and piezoelectric properties were systematically investigated. The tetragonality increased in the ceramics when 2nd calcination temperature increased to the optimized temperature at $750^{\circ}C$. At that temperature, excellent physical properties ($d_{33}=352\;pC/N$, ${\varepsilon}_r=1,687$, $k_p=0.570$, $Q_m=1,640$) were obtained for ultrasonic generator application.

Acknowledgement

Grant : 냉각 장치를 구비한 외과수술용 초음파 절삭기 및 핸 드피스 개발

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