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하소온도변화에 따른 초음파절삭기용 PMN-PNN-PZT 세라믹스의 압전 및 유전 특성
류주현,김승원,서동희,이은섭,최낙구,정회승,Yoo, Ju-Hyun,Kim, Seung-Won,Seo, Dong-Hi,Lee, Eun-Sup,Choi, Nak-Gu,Jeong, Hoy-Seung 한국전기전자재료학회 2017 전기전자재료학회논문지 Vol.30 No.3
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.