发明公开
- 专利标题： LEAD-FREE PIEZOELECTRIC CERAMIC COMPOSITION, METHOD FOR PRODUCING SAME, PIEZOELECTRIC ELEMENT USING LEAD-FREE PIEZOELECTRIC CERAMIC COMPOSITION, ULTRASONIC PROCESSING MACHINE, ULTRASONIC DRIVE DEVICE, AND SENSING DEVICE
- 专利标题（中）： 无铅压电陶瓷组合物，方法制作，在使用无铅压电陶瓷组合物，加工机超声波，超声波驱动装置和传感器压电元件
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申请号： EP12811521.9申请日： 2012-07-04
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公开(公告)号： EP2733131A1公开(公告)日： 2014-05-21
- 发明人: YAMAZAKI, Masato , MATSUOKA, Takayuki , KITAMURA, Kazuaki , YAMADA, Hideto , KURAHASHI, Toshiaki , YAMAGIWA, Katsuya , OHBAYASHI, Kazushige
- 申请人： NGK SPARK PLUG CO., LTD.
- 申请人地址： 14-18, Takatsuji-cho, Mizuho-ku, Nagoya-shi, Aichi 467-8525 JP
- 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： 14-18, Takatsuji-cho, Mizuho-ku, Nagoya-shi, Aichi 467-8525 JP
- 代理机构： Grünecker, Kinkeldey, Stockmair & Schwanhäusser
- 优先权： JP2011154430 20110713
- 国际公布： WO2013008418 20130117
- 主分类号： C04B35/00
- IPC分类号： C04B35/00 ; G01L23/22 ; H01L41/08 ; H01L41/09 ; H01L41/187 ; H01L41/22 ; H01L41/39 ; H03H9/17 ; H04R17/00
摘要：
A lead-free piezoelectric ceramic composition mainly includes a first crystal phase (KNN phase) and a second crystal phase (NTK phase). In the first crystal phase (KNN phase), a plurality of crystal grains formed of an alkali niobate/tantalate perovskite oxide having piezoelectric characteristics is bound to each other in a deposited state. The second crystal phase (NTK phase) is formed of a compound containing titanium (Ti) and fills spaces between the crystal grains in the first crystal phase.
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