Title:
PIEZOELECTRIC CERAMICS, MANUFACTURING METHOD THEREFOR, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, ULTRASONIC MOTOR, AND DUST REMOVAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/086738
Kind Code:
A3
Abstract:
Provided are a barium titanate-based piezoelectric ceramics having satisfactory piezoelectric performance and a satisfactory mechanical quality factor (Qm), and a piezoelectric element using the same. Specifically provided are a piezoelectric ceramics, including: crystal particles; and a grain boundary between the crystal particles, in which the crystal particles each include barium titanate having a perovskite-type structure and manganese at 0.04% by mass or more and 0.20% by mass or less in terms of a metal with respect to the barium titanate, and the grain boundary includes at least one compound selected from the group consisting of Ba4Ti12O27 and Ba6Ti17O40, and a piezoelectric element using the same.
Inventors:
SUZUKI TATSUYA (JP)
TSUKAMOTO MASAMI (JP)
SHIMADA MIKIO (JP)
IFUKU TOSHIHIRO (JP)
MATSUDA TAKANORI (JP)
KUBOTA MAKOTO (JP)
HAYASHI JUMPEI (JP)
TSUKAMOTO MASAMI (JP)
SHIMADA MIKIO (JP)
IFUKU TOSHIHIRO (JP)
MATSUDA TAKANORI (JP)
KUBOTA MAKOTO (JP)
HAYASHI JUMPEI (JP)
Application Number:
PCT/JP2011/079753
Publication Date:
August 16, 2012
Filing Date:
December 15, 2011
Export Citation:
Assignee:
CANON KK (JP)
SUZUKI TATSUYA (JP)
TSUKAMOTO MASAMI (JP)
SHIMADA MIKIO (JP)
IFUKU TOSHIHIRO (JP)
MATSUDA TAKANORI (JP)
KUBOTA MAKOTO (JP)
HAYASHI JUMPEI (JP)
SUZUKI TATSUYA (JP)
TSUKAMOTO MASAMI (JP)
SHIMADA MIKIO (JP)
IFUKU TOSHIHIRO (JP)
MATSUDA TAKANORI (JP)
KUBOTA MAKOTO (JP)
HAYASHI JUMPEI (JP)
International Classes:
C04B35/468; B41J2/045; B41J2/055; B41J2/135; B41J2/14; B41J2/16; C04B35/462; H01L41/09; H01L41/187; H01L41/22; H01L41/257; H01L41/39; H01L41/43; H03H9/17
Foreign References:
| JP2010120835A | 2010-06-03 | |||
| US20020151430A1 | 2002-10-17 | |||
| DE1671076B1 | 1971-07-01 | |||
| EP2328193A2 | 2011-06-01 |
Other References:
LU S C ET AL: "Effect of microstructure on dielectric and fatigue strengths of BaTiO3", JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, vol. 30, no. 12, 1 September 2010 (2010-09-01), ELSEVIER SCIENCE PUBLISHERS, BARKING, ESSEX, GB, pages 2569 - 2576, XP027107077, ISSN: 0955-2219, [retrieved on 20100603]
Attorney, Agent or Firm:
OKABE, Yuzuru et al. (Fuji Bldg. 2-3, Marunouchi 3-chome, Chiyoda-k, Tokyo 05, JP)
Download PDF:
Previous Patent: COMPOSITION
Next Patent: FIBER-REINFORCED FLAT PLASTIC WIRE, PROCESS FOR PRODUCING SAME, AND FIBER-REINFORCED SHEET
Next Patent: FIBER-REINFORCED FLAT PLASTIC WIRE, PROCESS FOR PRODUCING SAME, AND FIBER-REINFORCED SHEET