Invention Publication
- Patent Title: UNLEADED PIEZOELECTRIC CERAMIC COMPOSITION, PIEZOELECTRIC ELEMENT USING SAME, DEVICE, AND METHOD FOR MANUFACTURING UNLEADED PIEZOELECTRIC CERAMIC COMPOSITION
- Patent Title (中): 无铅压电陶瓷组合物，压电元件，对于无铅压电陶瓷组合物生产的装置和方法
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Application No.: EP14775921.1Application Date: 2014-03-11
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Publication No.: EP2980040A1Publication Date: 2016-02-03
- Inventor: YAMAZAKI, Masato , MATSUOKA, Takayuki , KITAMURA, Kazuaki , KOZUKA, Hisashi , YAMADA, Hideto , KURAHASHI, Toshiaki , KASASHIMA, Takashi , OKIMURA, Yasuyuki , OHBAYASHI, Kazushige
- Applicant: NGK Sparkplug Co., Ltd.
- Applicant Address: 14-18 Takatsuji-cho Mizuho-ku Nagoya-shi, Aichi 467-8525 JP
- Assignee: NGK Sparkplug Co., Ltd.
- Current Assignee: NGK Sparkplug Co., Ltd.
- Current Assignee Address: 14-18 Takatsuji-cho Mizuho-ku Nagoya-shi, Aichi 467-8525 JP
- Agency: Zimmermann & Partner Patentanwälte mbB
- Priority: JP2013071778 20130329
- International Announcement: WO2014156015 20141002
- Main IPC: C04B35/00
- IPC: C04B35/00 ; H01L41/09 ; H01L41/113 ; H01L41/187 ; H01L41/333 ; H03H3/02 ; H03H9/17
Abstract:
A lead-free piezoelectric ceramic composition includes a first crystal phase made of an alkali niobate/tantalate type perovskite oxide having piezoelectric properties, and a second crystal phase made of an M-Ti-O spinel compound (where the element M is a monovalent to quadrivalent element).
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