发明申请
- 专利标题： Method for producing piezoelectric ceramic
- 专利标题（中）： 压电陶瓷的制造方法
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申请号： US12230677申请日： 2008-09-03
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公开(公告)号： US20090065731A1公开(公告)日： 2009-03-12
- 发明人: Keisuke Teranishi , Tomohisa Azuma , Masakazu Hirose
- 申请人： Keisuke Teranishi , Tomohisa Azuma , Masakazu Hirose
- 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： JP2007-230937 20070906
- 主分类号： C04B35/46
- IPC分类号： C04B35/46
摘要：
To provide a method for producing a piezoelectric ceramic which can improve toughness thereof. Provided is a method for producing a piezoelectric ceramic which includes a step of polarizing a piezoelectric ceramic having a main component represented by a composition formula Pba[(MnbNbc)dTieZrf]O3, wherein a to f satisfy 0.98≦a≦1.01, 0.340≦b≦0.384, 0.616≦c≦0.660, 0.08≦d≦0.12, 0.500≦e≦0.540, 0.37≦f≦0.41, and bd+cd+e+f=1, and 1 to 10% by weight of Al in terms of Al2O3 as an additive, and heat-treating the polarized piezoelectric ceramic for 10 to 60 minutes in a range of 200 to 300° C. As a result of this heat treatment, toughness of the piezoelectric ceramic can be improved.
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