发明授权
- 专利标题: Piezoelectric ceramic composition and piezoelectric device
- 专利标题(中): 压电陶瓷组合物和压电装置
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申请号: US12055079申请日: 2008-03-25
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公开(公告)号: US07808161B2公开(公告)日: 2010-10-05
- 发明人: Masato Yamazaki , Kohei Ito , Yasuhiro Fujii , Katsuya Yamagiwa , Takeshi Mitsuoka
- 申请人: Masato Yamazaki , Kohei Ito , Yasuhiro Fujii , Katsuya Yamagiwa , Takeshi Mitsuoka
- 申请人地址: JP Aichi
- 专利权人: NGK Spark Plug Co., Ltd.
- 当前专利权人: NGK Spark Plug Co., Ltd.
- 当前专利权人地址: JP Aichi
- 代理机构: Sughrue Mion, PLLC
- 主分类号: H01L41/16
- IPC分类号: H01L41/16
摘要:
There is provided a piezoelectric ceramic composition that contains Na, Bi, Ti and Co wherein the composition ratio of Na, Bi, Ti and Co in terms of oxides thereof is in the following composition range (1): aNa2O-bBi2O3-cTiO2-dCoO (1) where a, b, c and d are mole fractions; 0.03≦a≦0.042; 0.330≦b≦0.370; 0.580≦c≦0.620; 0
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