| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a laminated piezoelectric element which has no disconnection between an external electrode and an internal electrode even when it is continuously driven for a long period of time under high electric field and high pressure and is excellent in durability; and also to provide its manufacturing method and an injection device. <P>SOLUTION: The laminated piezoelectric element comprises a laminate formed by alternately laminating a plurality of piezoelectric bodies and a plurality of internal electrodes, and a pair of external electrodes which is formed on side faces of the laminate and is alternately connected by every other layer of the internal electrode. The external electrodes are formed of a conductive material mainly of silver with some glass, where a weight percentage of silver in the conductive material which constitutes the internal electrodes 2 is X and that in the external electrodes 4 is Y, X≥85 and 0.9≤X/Y≤1.1 should be satisfied. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
