| 发明名称 |
Piezoelectric ceramic composition |
| 摘要 |
This invention provides a piezoelectric ceramic composition having large field-induced strain under high compressive stress, small temperature dependence of strain, and high energy conversion efficiency even at high temperatures. The composition is represented by; (Pb1-(3X/2)-(U/2)LaX)((ZrYTi1-Y)1-Z-U(Mg1/3Nb2/3)ZNbU)O3 where 0<X<2/3; 0<U<1; 0.53-(Z/3)</=Y</=0.56-(Z/3); and 0.02</=Z</=0.10. In this composition, a part of the crystals of PZT has been substituted by La and Nb and further by a suitable amount of PMN. These substituents play complementary roles to each other to impart aforementioned excellent properties to the ceramic composition./!
|
| 申请公布号 |
US5753136(A) |
申请公布日期 |
1998.05.19 |
| 申请号 |
US19970862924 |
申请日期 |
1997.05.27 |
| 申请人 |
KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO |
发明人 |
TANI, TAKAO;TAKEUCHI, TSUGUTO;MAKINO, HIROAKI;KAMIYA, NOBUO |
| 分类号 |
C04B35/49;C04B35/493;H01L41/187;(IPC1-7):C04B35/491 |
主分类号 |
C04B35/49 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
