发明公开
EP3130574A4 LEAD-FREE PIEZOELECTRIC CERAMIC COMPOSITION, PIEZOELECTRIC ELEMENT USING SAME, PRODUCTION METHOD FOR LEAD-FREE PIEZOELECTRIC CERAMIC COMPOSITION
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基本信息:
- 专利标题： LEAD-FREE PIEZOELECTRIC CERAMIC COMPOSITION, PIEZOELECTRIC ELEMENT USING SAME, PRODUCTION METHOD FOR LEAD-FREE PIEZOELECTRIC CERAMIC COMPOSITION
- 申请号：EP15776632 申请日：2015-03-05
- 公开(公告)号：EP3130574A4 公开(公告)日：2018-03-14
- 发明人： KOZUKA HISASHI , YAMADA HIDETO , MATSUOKA TAKAYUKI , KITAMURA KAZUAKI , YAMAZAKI MASATO , KURAHASHI TOSHIAKI , KASASHIMA TAKASHI , OKIMURA YASUYUKI , OHBAYASHI KAZUSHIGE
- 申请人： NGK SPARK PLUG CO
- 专利权人： NGK SPARK PLUG CO
- 当前专利权人： NITERRA CO., LTD., NAGOYA-SHI, JP
- 当前专利权人地址： NITERRA CO., LTD., NAGOYA-SHI, JP
- 优先权： JP2014081771 2014-04-11; JP2014248976 2014-12-09
- 主分类号： C04B35/00
- IPC分类号： C04B35/00 ; H01L41/187 ; H01L41/39 ; H01L41/43
摘要：
Provided is a lead-free piezoelectric ceramic composition having high piezoelectric properties. The lead-free piezoelectric ceramic composition fulfils a molar ratio (Na/K) for Na (sodium) and K (potassium) in the main phase thereof of 0.40 direction when the main phase is expressed as a pseudo cubic crystal.