发明授权
- 专利标题: Integrally fired, laminated electromechanical transducing element
- 专利标题(中): 整体烧制,层压电机转换元件
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申请号: US10029005申请日: 2001-12-28
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公开(公告)号: US06734607B2公开(公告)日: 2004-05-11
- 发明人: Toshiatsu Nagaya , Youta Iwamoto , Hitoshi Shindo , Atsuhiro Sumiya , Eturo Yasuda
- 申请人: Toshiatsu Nagaya , Youta Iwamoto , Hitoshi Shindo , Atsuhiro Sumiya , Eturo Yasuda
- 优先权: JP2000-400210 20001228; JP2000-400211 20001228; JP2000-400212 20001228; JP2000-400213 20001228; JP2001-376241 20011210; JP2001-376242 20011210; JP2001-376243 20011210; JP2001-376244 20011210
- 主分类号: H01L4108
- IPC分类号: H01L4108
摘要:
An integrally fired, laminated electromechanical transducing element, fabricated using an inexpensive electrode material and having the electrode characteristic at least equivalent to that of the Ag—Pd electrode, is disclosed. Especially, in the integrally fired, laminated electromechanical transducing element according to the invention, (A) the rigidity of the internal electrode layers is low and the internal stress generated at the time of expansion or contraction of the ceramic layers is small, (B) the antimigration characteristic is superior, (C) the charge loss is small, the heat conductivity is high and the heat radiation characteristic is superior, and/or (D) the bonding strength between the ceramic layers and the electrode layers is high. The integrally fired, laminated electromechanical transducing element (1) according to the invention comprises, for example, an integrally fired laminate member fabricated by integrally firing a plurality of the ceramic layers (11) of piezoelectric ceramic or electrostrictive ceramic and the internal electrode layers (21, 22) interposed between the ceramic layers (11). The main component of the internal electrode layers (21, 22) is a base metal having a rigidity of not more than 160 GPa.