Title:
圧電セラミックス、その製造方法、及び、それを有する圧電セラミックスピーカ
Document Type and Number:
Japanese Patent JP5931127
Kind Code:
B2
Abstract:
A piezoelectric ceramic speaker includes a piezoelectric element using a vibration sheet formed with piezoelectric ceramic having a primary phase constituted by ceramic grains of perovskite crystal structure containing Pb, Nb, Zn, Ti, and Zr, and a secondary phase constituted by ZnO grains, wherein the primary phase is constituted by ceramic grains expressed by a composition formula Pb {(Zr(1-a)Tia)x·(Ni1/3Nb2/3)y·(Zn1/3Nb2/3)z}O3 (where 0
Inventors:
Goki Watanabe
Takayuki Goto
Keiichi Hatano
Kishimoto Sumiaki
Yutaka Doshinda
Takayuki Goto
Keiichi Hatano
Kishimoto Sumiaki
Yutaka Doshinda
Application Number:
JP2014119824A
Publication Date:
June 08, 2016
Filing Date:
June 10, 2014
Export Citation:
Assignee:
TAIYO YUDEN CO.,LTD.
International Classes:
C04B35/493; H01L41/09; H01L41/187; H01L41/39; H04R17/00; H04R31/00
Domestic Patent References:
| JP2006193413A | ||||
| JP2014208562A | ||||
| JP2007284344A |
Other References:
Yongke YAN et al.,Indentification and Effect of Secondary Phase in MnO2-Doped 0.8Pb(Zr0.52Ti0.48)O3-0.2Pb(Zn1/3Nb2/3)O3 Piezoelectric Ceramics,Journal of American Ceramic Society,米国,2011年,Vol.94 No.11,p.3953-3959
Attorney, Agent or Firm:
Hiroyuki Kurihara