| 专利名称： | PIEZOELECTRIC CERAMIC COMPOSITION AND LAMINATED PIEZOELECTRIC ELEMENT |
| 公开（告）号： | |
| 公开（公告）日： | 2007-04-12 00:00:00 |
| 申请（专利）号： | US20060538089(US2007080317) |
| 申请日： | 2006-10-03 00:00:00 |
| 发明（设计）人： | IEZUMI KUMIKO (JP);YAMAZAKI JUNICHI (JP) |
| (申请)专利权（人）： | EP1772442 (A1);CA2561615 (A1) |
| 内容： | For the purpose of preventing the degradation of the piezoelectric strain properties when Cu is used for internal electrodes, there is provided a piezoelectric ceramic composition including: a composite oxide, as a main constituent thereof, represented by (Pba-bMeb) [(Zn1/3Nb2/3)xTiyZrz]O3 with the proviso that 0.96<=a<=1.03, 0<=b<=0.1, 0.05<=x<=0.15, 0.25<=y<=0.5, 0.35<=z<=0.6, and x+y+z=1, and Me represents at least one selected from Sr, Ca and Ba; and at least one selected from Co, Mg, Ni, Cr and Ga as a first additive to the main constituent in a content of 0.5% by mass or less (not inclusive of 0) in terms of oxide, wherein an electrode made of Cu is to be disposed on the piezoelectric ceramic composition. |
发布日期：2007-08-27 09:58:00