Title:
積層型圧電素子、噴射装置、燃料噴射システム、及び積層型圧電素子の製造方法
Document Type and Number:
Japanese Patent JP5101611
Kind Code:
B2
Abstract:
Provided is a highly durable laminated piezoelectric element wherein a stress generated at a portion, i.e., the boundary between an active region and inactive region, is reduced. A method for manufacturing such laminated piezoelectric element is also provided. The laminated piezoelectric element has a laminated structure (15) wherein a plurality of piezoelectric layers (11) and internal electrode layers (13) are alternately laminated. The piezoelectric layer (11) contains a metal element other than those elements constituting piezoelectric ceramic, i.e., the main component of the piezoelectric layer (11), and at a portion (11a) of the piezoelectric layer (11) at the vicinity of an end of the internal electrode layer (13), metal particles having a metal element as a main component exist. The content of the metal at the portion (11a) at the vicinity of the end is higher than the content of a compound of the metal element and a nonmetal element.
Inventors:
Masayoshi Inagaki
Ken Okamura
Tomohiro Kawamoto
Ken Okamura
Tomohiro Kawamoto
Application Number:
JP2009516356A
Publication Date:
December 19, 2012
Filing Date:
May 29, 2008
Export Citation:
Assignee:
Kyocera Corporation
International Classes:
H01L41/083; F02M51/00; F02M51/06; H01L41/187; H01L41/257; H01L41/273; H02N2/00
Domestic Patent References:
| JPS63142875A | 1988-06-15 | |||
| JP2003258328A | 2003-09-12 | |||
| JP2006156690A | 2006-06-15 | |||
| JP2008112809A | 2008-05-15 | |||
| JPH08242023A | 1996-09-17 | |||
| JP2001102646A | 2001-04-13 | |||
| JP2004207633A | 2004-07-22 |
Attorney, Agent or Firm:
Mitsuo Tanaka
Aoyama Aoi
Keiichi
Aoyama Aoi
Keiichi