IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0145861
(1988-01-20)
|
| 우선권정보 |
JP-0275732 (1987-02-11); JP-0266486 (1987-10-23) |
|
발명자
/ 주소 |
- Kasai Kiyoshi (Kanagawa JPX) Sakai Naomichi (Kanagawa JPX) Oikawa Tomoyuki (Kanagawa JPX) Uchino Kenji (Kanagawa JPX) Tsukidate Takaaki (Tokyo JPX) Asakura Hiroshi (Kanagawa JPX) Yamamura Hiroshi (Ka
|
| 출원인 / 주소 |
- Tosoh Corporation (Yamaguchi JPX 03)
|
| 인용정보 |
피인용 횟수 :
15 인용 특허 :
0 |
초록
▼
An actuator of the present invention is composed of a monomorph-type piezoelectric ceramic. The monomorph-type piezoelectric ceramic is a BaTiO3-based ceramic, a PZT based ceramic having Nb, Sb, La, Mn, Nd and Bi, BaTiO3－SrTiO3-based ceramic containing SrTiO3 by 20 to 35 mole %, K(Nb, Ta)O3-based ce
An actuator of the present invention is composed of a monomorph-type piezoelectric ceramic. The monomorph-type piezoelectric ceramic is a BaTiO3-based ceramic, a PZT based ceramic having Nb, Sb, La, Mn, Nd and Bi, BaTiO3－SrTiO3-based ceramic containing SrTiO3 by 20 to 35 mole %, K(Nb, Ta)O3-based ceramic, or a ceramic represented by a general formula: [Pb, (A½B½)](Zr1-n, Cn)O3 where A is a monovalent element such as Li, Na, K, Rb, Cs or the like, B is a trivalent element such as Bi, La, Y, Sb, Ga or the like, A and B being both replaceable solid-meltable elements for Pb, C is an element such as Ti, Sn or the like that is a replaceable solid-meltable element for Zr, and n is from 0 to 0.8.
대표청구항
▼
An actuator comprising an actuator element capable of bending in response to an applied electric field, said actuator element consisting of an unpolarized monomorph-type PZT-based piezoelectric ceramic which includes at least one additive selected from oxides of Nb, Sb, Ta, La, Mn and Bi in an amoun
An actuator comprising an actuator element capable of bending in response to an applied electric field, said actuator element consisting of an unpolarized monomorph-type PZT-based piezoelectric ceramic which includes at least one additive selected from oxides of Nb, Sb, Ta, La, Mn and Bi in an amount between 0.8 to 2.0 mol% relative to the PZT powder in said PZT-based piezoelectric ceramic, and wherein said PZT-based ceramic exhibits a dielectric loss value of at least 5% at 1 kHz, and a dielectric loss value at 100 kHz which is at least 30% less than the dielectric loss value at 1 kHz.
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