Piezoelectric ceramic composition
    72.
    发明授权
    Piezoelectric ceramic composition 有权
    压电陶瓷组合物

    公开(公告)号:US07985348B2

    公开(公告)日:2011-07-26

    申请号:US12076694

    申请日:2008-03-21

    IPC分类号: H01L41/187

    摘要: A piezoelectric ceramic composition having a large piezoelectric constant (d) and as well having a large Qm value is to be provided. The piezoelectric ceramic composition aimed at has a composition corresponding to a solid solution containing a first compound possessing a rhombohedral crystal-based perovskite structure, a second compound possessing a tetragonal crystal-based perovskite structure, and a third compound. The third compound is a compound oxide containing Bi as a first component element, Mn as a second component element, and a tetravalent metallic element or a pentavalent metallic element as a third component element. The tetravalent metallic element is at least one member selected from the group consisting of Ti, Zr, Hf, and Sn. The pentavalent metallic element is at least one member selected from the group consisting of Nb, Ta, and Sb.

    摘要翻译: 提供具有大的压电常数(d)并且具有大的Qm值的压电陶瓷组合物。 目标的压电陶瓷组合物具有对应于含有具有菱方晶系的钙钛矿结构的第一化合物,具有四方晶系钙钛矿结构的第二化合物和第三化合物的固溶体的组成。 第三化合物是含有Bi作为第一成分元素的复合氧化物,Mn作为第二成分元素,四价金属元素或五价金属元素作为第三成分元素。 四价金属元素是选自Ti,Zr,Hf和Sn中的至少一种。 五价金属元素是选自Nb,Ta和Sb中的至少一种。

    PIEZOELECTRIC CERAMIC COMPOSITION AND PIEZOELECTRIC ELEMENT MADE BY USING THE SAME
    77.
    发明申请
    PIEZOELECTRIC CERAMIC COMPOSITION AND PIEZOELECTRIC ELEMENT MADE BY USING THE SAME 有权
    压电陶瓷组合物和使用它的压电元件

    公开(公告)号:US20100264355A1

    公开(公告)日:2010-10-21

    申请号:US12747810

    申请日:2009-06-22

    IPC分类号: H01L41/187

    摘要: The present invention provides a piezoelectric ceramic composition having a high thermal resistance and a high piezoelectric distortion constant and a piezoelectric element using the piezoelectric ceramic composition. The piezoelectric ceramic composition of the present invention contains Na, Bi, Ti, Cr and O, wherein the content ratio of Na, Bi, Ti and Cr in terms of oxides thereof falls within the following composition range: aNa2O-bBi2O3-cTiO2-dCrO where a, b, c and d are mole fractions; 0.030≦a≦0.042; 0.330≦b≦0.370; 0.580≦c≦0.620; 0≦d≦0.017; and a+b+c+d=1. The piezoelectric ceramic composition preferably has a main crystal phase of bismuth layer-structured ferroelectric, more preferably Na0.5Bi4.5Ti4O15 crystal. The piezoelectric element of the present invention includes a piezoelectric body formed of the piezoelectric ceramic composition and at least a pair of electrodes held in contact with the piezoelectric body.

    摘要翻译: 本发明提供一种具有高热阻和高压电变形常数的压电陶瓷组合物和使用压电陶瓷组合物的压电元件。 本发明的压电陶瓷组合物含有Na,Bi,Ti,Cr和O,其中Na,Bi,Ti和Cr的氧化物含量在下列组成范围内:aNa2O-bBi2O3-cTiO2-dCrO 其中a,b,c和d是摩尔分数; 0.030≦̸ a≦̸ 0.042; 0.330≦̸ b≦̸ 0.370; 0.580≦̸ c≦̸ 0.620; 0≦̸ d≦̸ 0.017; 和a + b + c + d = 1。 压电陶瓷组合物优选具有铋层结构的铁电体的主晶相,更优选为Na 0.5 B 4 4.5 Ti 4 O 15晶体。 本发明的压电元件包括​​由压电陶瓷组合物形成的压电体和与压电体保持接触的至少一对电极。

    Piezoelectric ceramic composition
    80.
    发明申请
    Piezoelectric ceramic composition 有权
    压电陶瓷组合物

    公开(公告)号:US20080237531A1

    公开(公告)日:2008-10-02

    申请号:US12076694

    申请日:2008-03-21

    IPC分类号: H01L41/187

    摘要: A piezoelectric ceramic composition having a large piezoelectric constant (d) and as well having a large Qm value is to be provided. The piezoelectric ceramic composition aimed at has a composition corresponding to a solid solution containing a first compound possessing a rhombohedral crystal-based perovskite structure, a second compound possessing a tetragonal crystal-based perovskite structure, and a third compound. The third compound is a compound oxide containing Bi as a first component element, Mn as a second component element, and a tetravalent metallic element or a pentavalent metallic element as a third component element. The tetravalent metallic element is at least one member selected from the group consisting of Ti, Zr, Hf, and Sn. The pentavalent metallic element is at least one member selected from the group consisting of Nb, Ta, and Sb.

    摘要翻译: 提供具有大的压电常数(d)并且具有大的Qm值的压电陶瓷组合物。 目标的压电陶瓷组合物具有对应于含有具有菱方晶系的钙钛矿结构的第一化合物,具有四方晶系钙钛矿结构的第二化合物和第三化合物的固溶体的组成。 第三化合物是含有Bi作为第一成分元素的复合氧化物,Mn作为第二成分元素,四价金属元素或五价金属元素作为第三成分元素。 四价金属元素是选自Ti,Zr,Hf和Sn中的至少一种。 五价金属元素是选自Nb,Ta和Sb中的至少一种。