发明名称 |
Laminated piezoelectric element, ejection device, fuel ejection system, and method for manufacturing laminated piezoelectric element |
摘要 |
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.
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申请公布号 |
US8339018(B2) |
申请公布日期 |
2012.12.25 |
申请号 |
US20080602076 |
申请日期 |
2008.05.29 |
申请人 |
INAGAKI MASAHIRO;OKAMURA TAKESHI;KAWAMOTO TOMOHIRO;KYOCERA CORPORATION |
发明人 |
INAGAKI MASAHIRO;OKAMURA TAKESHI;KAWAMOTO TOMOHIRO |
分类号 |
H01L41/083;H01L41/257;H01L41/273 |
主分类号 |
H01L41/083 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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