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Composite Bismuth-based lead-free piezoelectric ceramics and process for preparing the same
The present invention relates to composite bismuth based lead-free piezoelectric ceramics and a method for preparing composite bismuth based lead-free piezoelectric ceramics and, more specifically, to composite bismuth based lead-free piezoelectric ceramics having electric field induced strain in a low electric field, an actuator including the same and a method for manufacturing composite bismuth based lead-free piezoelectric ceramics. The composite bismuth based lead-free piezoelectric ceramics according to an embodiment of the present invention is obtained by replacing portion of Ti of (Bi, Na)TiO_3 with Fe or Al in a (Bi, Na)TiO_3-SrTiO_3 based solid solution made by adding SrTiO_3 to (Bi, Na)TiO_3 based host and has a Perovskite crystal structure, wherein the (Bi, Na)TiO_3-SrTiO_3 based solid solution may have a (1-x)[(Bi, Na)TiO_3]-xSrTiO_3 composition (where 0.20 <= x <= 0.24).
본 발명은 복합 비스무스계 무연 압전 세라믹스 및 복합 비스무스계 무연 압전 세라믹스 제조방법에 관한 것으로, 더욱 상세하게는 저전계에서 전계유기 변형률이 우수한 복합 비스무스계 무연 압전 세라믹스 및 이를 포함하는 액츄에이터, 복합 비스무스계 무연 압전 세라믹스 제조방법에 관한 것이다. 본 발명의 실시예에 따른 복합 비스무스계 무연 압전 세라믹스는 (Bi,Na)TiO계 모체에 SrTiO가 첨가된 (Bi,Na)TiO―SrTiO계 고용체에 상기 (Bi,Na)TiO의 Ti 일부가 Fe 또는 Al 원소로 치환되고, 페로브스카이트(Perovskite) 결정 구조를 가지며, 상기 (Bi,Na)TiO―SrTiO계 고용체는 (1-x)[(Bi,Na)TiO]―xSrTiO(여기서, 상기 x는 0.20 ≤ x ≤ 0.24)의 조성을 가질 수 있다.
Composite Bismuth-based lead-free piezoelectric ceramics and process for preparing the same
The present invention relates to composite bismuth based lead-free piezoelectric ceramics and a method for preparing composite bismuth based lead-free piezoelectric ceramics and, more specifically, to composite bismuth based lead-free piezoelectric ceramics having electric field induced strain in a low electric field, an actuator including the same and a method for manufacturing composite bismuth based lead-free piezoelectric ceramics. The composite bismuth based lead-free piezoelectric ceramics according to an embodiment of the present invention is obtained by replacing portion of Ti of (Bi, Na)TiO_3 with Fe or Al in a (Bi, Na)TiO_3-SrTiO_3 based solid solution made by adding SrTiO_3 to (Bi, Na)TiO_3 based host and has a Perovskite crystal structure, wherein the (Bi, Na)TiO_3-SrTiO_3 based solid solution may have a (1-x)[(Bi, Na)TiO_3]-xSrTiO_3 composition (where 0.20 <= x <= 0.24).
본 발명은 복합 비스무스계 무연 압전 세라믹스 및 복합 비스무스계 무연 압전 세라믹스 제조방법에 관한 것으로, 더욱 상세하게는 저전계에서 전계유기 변형률이 우수한 복합 비스무스계 무연 압전 세라믹스 및 이를 포함하는 액츄에이터, 복합 비스무스계 무연 압전 세라믹스 제조방법에 관한 것이다. 본 발명의 실시예에 따른 복합 비스무스계 무연 압전 세라믹스는 (Bi,Na)TiO계 모체에 SrTiO가 첨가된 (Bi,Na)TiO―SrTiO계 고용체에 상기 (Bi,Na)TiO의 Ti 일부가 Fe 또는 Al 원소로 치환되고, 페로브스카이트(Perovskite) 결정 구조를 가지며, 상기 (Bi,Na)TiO―SrTiO계 고용체는 (1-x)[(Bi,Na)TiO]―xSrTiO(여기서, 상기 x는 0.20 ≤ x ≤ 0.24)의 조성을 가질 수 있다.
Composite Bismuth-based lead-free piezoelectric ceramics and process for preparing the same
복합 비스무스계 무연 압전 세라믹스 및 이의 제조방법
CHO JEONG HO (author) / JEONG YOUNG HUN (author) / YUN JI SUN (author) / PARK JUNG SOO (author) / KIM SEONG WON (author) / PAIK JONG HOO (author) / JEONG SOON JONG (author) / LEE JAE SHIN (author)
2017-08-23
Patent
Electronic Resource
Korean
IPC:
C04B
Kalk
,
LIME
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