DOI QR코드

DOI QR Code

Dielectric and Piezoelectric Properties of (Na,K,Li)(Nb,Ta,Sb)O3 Ceramics Manufactured Using Columbite Methods with Calcination Temperature

Columbite법으로 제조된 (Na,K,Li)(Nb,Ta,Sb)O3 세라믹스의 하소온도에 따른 유전 및 압전 특성

  • Received : 2016.01.06
  • Accepted : 2016.02.23
  • Published : 2016.03.01

Abstract

In this paper, in order to develop optimum composition ceramics with excellent piezoelectric properties, $(Na_{0.525}K_{0.443}Li_{0.037})(Nb_{0.823}Sb_{0.08}Ta_{0.037})O_3+0.3wt%Bi_2O_3+0.4wt%Fe_2O_3$ lead-free piezoelectric ceramics were synthesized by conventional soild-state method. The calcination temperature of columbite precursors were fabricated at temperature range from $950^{\circ}C$ to $1,150^{\circ}C$ and sintering aids with low melting point were added to densify these ceramics. Effect of calcination temperature on dielectric and piezoelectric properties of ceramics were investigated. the ceramics with B-site columbite precursors at temperature of $1,100^{\circ}C$ obtained the optimal values of $d_{33}=272$ [pC/N], $k_p=0.51$, $Q_m=102$, ${\varepsilon}_r=978$.

Keywords

Calcination temperature;Columbite methods;Dielectric and piezoelectric properties

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Acknowledgement

Grant : 압전 액츄에이터응용을 위한 High d33를 갖는 저온소결 Pb-free 압전소재개발연구

Supported by : 세명대학교