| 专利名称： | PIEZOELECTRIC CERAMIC COMPOSITION |
| 公开（告）号： | |
| 公开（公告）日： | 2006-12-06 00:00:00 |
| 申请（专利）号： | EP20050719594(EP1728773) |
| 申请日： | 2005-02-28 00:00:00 |
| 发明（设计）人： | TDK CORP (JP) |
| (申请)专利权（人）： | HIROSE MASAKAZU (JP);AZUMA TOMOHISA (JP) |
| 内容： | A piezoelectric ceramic composition excellent in all of the electric property Q max , heat resisting properties and temperature characteristics of oscillation frequencies is provided. The piezoelectric ceramic composition comprises a phase mainly comprising lead zirconate titanate having a perovskite structure and an Al-containing phase. In the piezoelectric ceramic composition, the main component preferably comprises Mn and Nb, and is preferably represented by a composition formula of Pb +- [(Mn 1/3 Nb 2/3 ) x Ti y Zr z ]O 3 (wherein 0.97 +- 1.01, 0.04 x 0.16, 0.48 y 0.58, 0.32 z 0.41). |
发布日期：2007-08-17 08:43:00