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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Piezoelectric properties of Pb-free BNKT ceramics with $MnO_2$ addition

$MnO_2$첨가에 따른 무연 BNKT계의 압전특성

  • Published : 2004.07.05
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Abstract

[ $0.96[Bio_{0.5}(Na_{0.84}K_{0.16})_{0.5}TiO_3]+0.04SrTiO_3+0.3wt%Nb_2O_5+0.2wt%La_2O_3+xwt%MnO_2$ ], were studied in order to develope the superior dielectric and piezoelectric properties of Lead-free Piezoelectric ceramics. With increasing amount of $MnO_2$ addition, density showed the maximum value of $5.79[gcm^3$] at 0.1wt% $MnO_2$ addition, and electromechanical coupling factor($k_p$) and dielectric constant decreased, and mechanical quality factor($Q_m$) increased and showed the maximum value of 161 at 0.3wt% $MnO_2$ addition.

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