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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국전기전자재료학회 Transactions on Electrical and Electronic Materials Transactions on Electrical and Electronic Materials 제15권 제4호
- 발행연도
- 2014.1
- 수록면
- 226 - 229 (4page)
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초록· 키워드
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In this study, lead-free (Ba0.85Ca0.15)(Ti1-xZrx)O3 ceramics and a bimorph-type piezoelectric actuator were fabricatedusing the normal oxide-mixed sintering method, and their dielectric properties, microstructure, and displacementproperties were investigated. From the results of X-ray diffraction, the pattern of the specimen has a pure perovskitestructure. In addition, no secondary impurity phases were found. The excellent piezoelectric coefficient of d33 =454pC/N, the electromechanical coupling factor kp =0.51, the dielectric constant εr =3,657, the mechanical quality factorQm =239, and Tc(Tetragonal-Cubic) =90℃ were shown at x= 0.085. Δkp/kp20℃ and Δfr/fr20℃ showed the maximumvalue of -0.255 and 0.111 at -20℃ and 80℃, respectively. The maximum total-displacement was 60 μm under the inputvoltage of 50 V. As a result, it is considered that lead-free (Ba0.85Ca0.15)(Ti1-xZrx)O3 ceramics is a promising candidate forpiezoelectric actuator application for x= 0.085.
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