Piezoelectric ceramic composition, its production method and piezoelectric device
    9.
    发明授权
    Piezoelectric ceramic composition, its production method and piezoelectric device 有权
    压电陶瓷组合物,其制作方法和压电器件

    公开(公告)号:US07150838B2

    公开(公告)日:2006-12-19

    申请号:US10391192

    申请日:2003-03-19

    IPC分类号: C04B35/495

    CPC分类号: C04B35/495 H01L41/187

    摘要: This invention provides a piezoelectric ceramic composition that does not contain lead, can be sintered at a normal pressure and has a high electro-mechanical coupling coefficient and a small dielectric loss, its production method, and a piezoelectric device utilizing the piezoelectric ceramic composition. The invention relates to a piezoelectric composition containing a compound expressed by the general formula {Lix(K1-yNay)1-x}(Nb1-zTaz)O3, each of x, y and z respectively falling within composition range of 0≦x≦0.2, 0≦y≦1.0 and 0≦z≦0.4, as its main component, and further containing nickel or a nickel-containing compound. To provide a piezoelectric device that does not contain lead, can be sintered at a normal pressure and has a high electro-mechanical coupling coefficient Kp and a small dielectric loss, the piezoelectric ceramic composition of the invention is expressed by the general formula {Lix(K1-yNay)1-x}(Nb1-z-nTaz(Mn0.5W0.5)nO3, each of x, y, z and n respectively falling within a composition range of 0≦x≦0.2, 0≦y≦1.0, 0≦z≦0.4 and 0

    摘要翻译: 本发明提供一种不含铅的压电陶瓷组合物,可以在常压下烧结并具有高机电耦合系数和小介电损耗,其制造方法以及利用该压电陶瓷组合物的压电元件。 本发明涉及一种压电组合物,其包含由通式{Li x 1(x 1-y Na y) 1-x N(Nb 1-z z z z)O 3,x,y和z各自分别位于 0 <= x <= 0.2,0 <= y <= 1.0和0 <= z <= 0.4的组成范围作为其主要成分,并且还包含镍或含镍化合物。 为了提供不含铅的压电元件,可以在常压下烧结并具有高机电耦合系数Kp和小的介电损耗,本发明的压电陶瓷组合物由通式{Li < (Nb 1-x N)(Nb 1-x N)(Nb 1-x N) (Mn 0.5 W 0.5)N 3 O 3,每个 分别落在0 <= x <= 0.2,0 <= y <= 1.0,0 <= z <= 0.4和0