发明申请
- 专利标题: PIEZOELECTRIC CERAMIC COMPOSITION AND LAMINATED PIEZOELECTRIC ELEMENT
- 专利标题(中): 压电陶瓷组合物和层压压电元件
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申请号: US11944808申请日: 2007-11-26
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公开(公告)号: US20080129155A1公开(公告)日: 2008-06-05
- 发明人: Kumiko Iezumi , Junichi Yamazaki , Norimasa Sakamoto
- 申请人: Kumiko Iezumi , Junichi Yamazaki , Norimasa Sakamoto
- 申请人地址: JP Tokyo
- 专利权人: TDK CORPORATION
- 当前专利权人: TDK CORPORATION
- 当前专利权人地址: JP Tokyo
- 优先权: JP2006-324770 20061130; JP2006-324772 20061130
- 主分类号: C04B35/45
- IPC分类号: C04B35/45 ; H01L41/187 ; H01L41/16
摘要:
A piezoelectric ceramic composition includes: a composite oxide, as a main component thereof, represented by the composition formula, Pba[(Zn1/3Nb2/3)xTiyZrz]O3, wherein a, x, y and z satisfy the following relations, 0.96≦a≦1.03, 0.005≦x≦0.047, 0.42≦y≦0.53, 0.45≦z≦0.56, and x+y+z=1, and the following additives in the indicated percentages by mass in relation to the main component, Cu as a first additive, in a content α, in terms of Cu2O, falling within a range 0
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