发明名称 |
Method of manufacturing a sintered (Bi,Na)TiO3 piezoelectric body |
摘要 |
<p>A piezoelectric body containing (Bi1/2Na1/2)TiO3 as a main component which is obtained by forming and sintering powders. A heterogeneous phase other than (Bi1/2Na1/2)TiO3 system perovskite phase in the powders has a peak ratio relative to the strongest peak of the perovskite phase of 5% or lower as determined by powder X-ray diffraction. As a result, the frequency of producing dielectric breakdown in a sintered piezoelectric body during polarization can be dramatically reduced to 0.1 to 2%. The manufacturing yield can be increased and manufacturing cost can be reduced and the reliability of products manufactured therefrom can be improved.</p> |
申请公布号 |
EP1081773(A2) |
申请公布日期 |
2001.03.07 |
申请号 |
EP20000307394 |
申请日期 |
2000.08.29 |
申请人 |
NGK INSULATORS, LTD. |
发明人 |
YAMAGUCHI, HIROFUMI;KOIZUMI, TAKAAKI |
分类号 |
C04B35/46;C04B35/462;H01L41/187;H01L41/39;(IPC1-7):H01L41/24;C04B35/475 |
主分类号 |
C04B35/46 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|