Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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A Study on the Characteristics of Dielectric and Piezoelectric in (Na,K)$NbO_3$-system Pb-free Piezoelectric Ceramics add ZnO

ZnO를 첨가한 (Na,K)$NbO_3$계 무연 압전 세라믹스의 유전 및 압전 특성에 관한 연구

  • 류성림 (충주대학교신소재공학과/친환경, 에너지변환, 저장소자 연구센터) ;
  • 김시철 (충주대학교신소재공학과/친환경, 에너지변환, 저장소자 연구센터) ;
  • 이경선 (충주대학교신소재공학과/친환경, 에너지변환, 저장소자 연구센터) ;
  • 이충호 (충주대학교) ;
  • 류주현 (세명대학교) ;
  • 김영민 (충북대학교)
  • Published : 2005.11.10
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Abstract

In this paper, in order to develop Pb-free piezoelectric ceramics, $[Li_{0.04}(Na_{0.44}K_{0.52})-(Nb_{0.86}Ta_{0.10}Sb_{0.04})]O_3$ ceramic was fabricated with the variation of ZnO addition. Piezoelectric properties of the ceramic were varied with the amount of ZnO addition and showed the maximum kp value at 0.2 wt% ZnO addition. Qm of ZnO added ceramics showed lower values than the non-added ceramics, however, the kp was increased by the addition of ZnO up to 0.2 wt%. At the sintering temperature of 1110$^{\circ}C$ and the calcination temperature of 850$^{\circ}C$, the optimal values of density=473g/$cm^3$, kp=0.473, $\varepsilon_r$=1403 were obtained.

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