Dielectric and Piezoelectric Properties of Low-Temperature-Sintering Pb(Mg1/2W1/2)O3-Pb(Ni1/3Nb2/3)O3-Pb(Zr,Ti)O3 Ceramics for Multilayer Piezoelectric Actuator
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概要
- 論文の詳細を見る
In this study, in order to develop low-temperature-sintering ceramics for a multilayer piezoelectric actuator, Pb(Mg1/2W1/2)O3-Pb(Ni1/3Nb2/3)O3-Pb(Zr,Ti)O3 (PMW-PNN-PZT) ceramics were fabricated using Li2CO3 and CaCO3 as sintering aids and their dielectric and piezoelectric properties were investigated in relation to the amount of Bi substitution. Piezoelectric actuators require both a high piezoelectric constant ($d_{33}$) and a high electromechanical coupling factor ($k$p). Accordingly, in this study, Bi was substituted at the Pb site of basic composition PMW-PNN-PZT ceramics for the enhancement of $k$p and $d_{33}$. With increasing Bi substitution, density gradually increased. At the sintering temperature of 900°C, the electromechanical coupling factor ($k$p) and piezoelectric constant ($d_{33}$) of PMW-PNN-PZT composition ceramics with 1.0 mol % Bi substitution as well as 0.2 wt % Li2CO3 and 0.25 wt % CaCO3 showed the optimal value of 0.618 and 473 pC/N, respectively, for multilayer piezoelectric actuator application.
- 2005-09-15
著者
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Chung Kwanghyun
Department Of Electrical And Electronic Engineering Toyohashi University Of Technology
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Yoo Juhyun
Department Of Electrical Engineering Semyong University
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Yoo Kyungjin
Department of Electrical Engineering, Semyung University, Jechon, Chungbuk 390-711, Korea
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Lee Hyunseok
Department of Electrical Engineering, Semyung University Jechon, Chungbuk 390-711, Korea
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Lee Hyunseok
Department of Electrical Engineering, Semyung University, Jechon, Chungbuk 390-711, Korea
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Lee Sangho
Department of Electrical Engineering, Semyung University, Jechon, Chungbuk 390-711, Korea
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Lee Hyeunggyu
Korea Electronics Technology Institute, Bundang, Sungnam, Kyunggi 463-816, Korea
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Kang Hyungwon
Korea Electronics Technology Institute, Bundang, Sungnam, Kyunggi 463-816, Korea
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