发明授权
- 专利标题: Piezoelectric material, piezoelectric element, liquid discharge head, ultrasonic motor, and dust cleaning device
- 专利标题(中): 压电材料,压电元件,排液头,超声波电机和除尘装置
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申请号: US13702998申请日: 2011-06-07
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公开(公告)号: US09076969B2公开(公告)日: 2015-07-07
- 发明人: Jumpei Hayashi , Takanori Matsuda , Takayuki Watanabe
- 申请人: Jumpei Hayashi , Takanori Matsuda , Takayuki Watanabe
- 申请人地址: JP Tokyo
- 专利权人: Canon Kabushiki Kaisha
- 当前专利权人: Canon Kabushiki Kaisha
- 当前专利权人地址: JP Tokyo
- 代理机构: Canon USA Inc. IP Division
- 优先权: JP2010-133291 20100610; JP2011-115837 20110524
- 国际申请: PCT/JP2011/063623 WO 20110607
- 国际公布: WO2011/155634 WO 20111215
- 主分类号: H01L41/187
- IPC分类号: H01L41/187 ; B08B7/02 ; B41J2/14 ; C01G33/00 ; C04B35/495 ; H01L41/43 ; H02N2/10 ; H02N2/16 ; H01L41/18
摘要:
A piezoelectric material including a barium bismuth niobate-based tungsten bronze structure metal oxide having a high degree of orientation is provided. A piezoelectric element, a liquid discharge head, an ultrasonic motor, and a dust cleaning device including the piezoelectric material are also provided. A piezoelectric material includes a tungsten bronze structure metal oxide that includes metal elements which are barium, bismuth, and niobium, and tungsten. The metal elements satisfy following conditions on a molar basis: when Ba/Nb=a, 0.30≦a≦0.40, and when Bi/Nb=b, 0.012≦b≦0.084. The tungsten content on a metal basis is 0.40 to 3.00 parts by weight relative to 100 parts by weight of the tungsten bronze structure metal oxide. The tungsten bronze structure metal oxide has a c-axis orientation.
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