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    Piezoelectric Ceramics and Piezoelectric Element
    2.
    发明申请
    Piezoelectric Ceramics and Piezoelectric Element 审中-公开
    压电陶瓷和压电元件

    公开(公告)号：US20070257228A1

    公开(公告)日：2007-11-08

    申请号：US10581277

    申请日：2004-12-03

    申请人： Takeo Tsukada ,  Tomohisa Azuma ,  Masakazu Hirose ,  Hitoshi Oka

    发明人： Takeo Tsukada ,  Tomohisa Azuma ,  Masakazu Hirose ,  Hitoshi Oka

    IPC分类号： H01L41/083

    CPC分类号： C04B35/475 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3224 ,  C04B2235/3227 ,  H01L41/187

    摘要： A piezoelectric ceramics having ceramic particles, wherein said ceramic particles comprises bismuth layer compound containing at least Sr, Ln (note that Ln is a lanthanoid element), Bi, Ti and O and including MIIBi4Ti4O15 type crystal (MII is an element composed of Sr and Ln) as a main component, and an oxide of Mn as a subcomponent; and an average particle diameter by the code length measuring method is 0.8 to 4.7 μm: by which it is possible to provide piezoelectric ceramics having a large Qmax in a third harmonic mode of thickness vertical vibration in a relatively high frequency band (for example, 16 to 65 MHz), a resonator an other piezoelectric element comprising the piezoelectric ceramics as a piezoelectric substance thereof.

    摘要翻译： 一种具有陶瓷颗粒的压电陶瓷，其中所述陶瓷颗粒包括至少含有Sr，Ln的铋层化合物（注意Ln是镧系元素），Bi，Ti和O，并且包括M II > 4 15 15 类型晶体（M II）是由Sr和Ln组成的元素作为主要成分， 和Mn的氧化物作为副成分; 并且通过代码长度测量方法的平均粒径为0.8至4.7μm：通过该压电陶瓷可以在相对的厚度垂直振动的三次谐波模式中提供具有大Q最大值的压电陶瓷 高频带（例如，16至65MHz），谐振器和包括作为其压电体的压电陶瓷的其它压电元件。

    Piezoelectric ceramic composition
    4.
    发明申请
    Piezoelectric ceramic composition 审中-公开
    压电陶瓷组合物

    公开(公告)号：US20060043329A1

    公开(公告)日：2006-03-02

    申请号：US11210468

    申请日：2005-08-24

    申请人： Masakazu Hirose ,  Tomohisa Azuma ,  Masahito Furukawa ,  Takeo Tsukada ,  Norimasa Sakamoto

    发明人： Masakazu Hirose ,  Tomohisa Azuma ,  Masahito Furukawa ,  Takeo Tsukada ,  Norimasa Sakamoto

    IPC分类号： C04B35/49

    CPC分类号： C04B35/493 ,  C04B35/62665 ,  C04B2235/3206 ,  C04B2235/3217 ,  C04B2235/3241 ,  C04B2235/3251 ,  C04B2235/3418 ,  H01L41/187

    摘要： A piezoelectric ceramic composition which has a large electromechanical coupling factor and is excellent in heat resisting properties is provided. As additives, Cr, Al and Si are contained together in the piezoelectric ceramic composition including a perovskite compound which contains Pb, Zr and Ti as main components. Preferably, Cr, Al and Si are respectively contained in a content of 0.05 to 0.50 wt % in terms of Cr2O3, in a content of 0.005 to 1.500 wt % in terms of Al2O3, and in a content of 0.005 to 0.100 wt % in terms of SiO2. By simultaneously including these three elements and setting the contents thereof to fall within the above mentioned ranges, the electromechanical coupling factor kt can be 30% or more, and ΔFr, which is the rate of change in resonant frequency Fr between before and after application of an external thermal shock, can be 0.5% or less in absolute value.

    摘要翻译： 提供了具有大的机电耦合系数并且耐热性优异的压电陶瓷组合物。 作为添加剂，包含Pb，Zr和Ti作为主要成分的钙钛矿型化合物的压电陶瓷组合物中含有Cr，Al，Si。 优选地，Cr，Al和Si分别以Cr 2 Al 3 O 3含量为0.05〜0.50重量％，含量为0.005〜1.500重量％ 以Al 2 O 3 3计，含量为0.005〜0.100重量％，以SiO 2 2计。 通过同时包含这三个要素并将其内容设定在上述范围内，机电耦合系数kt可以为30％以上，作为施加前后的谐振频率Fr的变化率的DeltaFr 外部热冲击的绝对值可以为0.5％以下。

    PIEZOELECTRIC CERAMIC COMPOSITION AND RESONATOR
    5.
    发明申请
    PIEZOELECTRIC CERAMIC COMPOSITION AND RESONATOR 审中-公开
    压电陶瓷组合物和谐振器

    公开(公告)号：US20080258100A1

    公开(公告)日：2008-10-23

    申请号：US11851415

    申请日：2007-09-07

    申请人： Keisuke Teranishi ,  Masakazu Hirose ,  Tomohisa Azuma

    发明人： Keisuke Teranishi ,  Masakazu Hirose ,  Tomohisa Azuma

    IPC分类号： C04B35/36

    CPC分类号： C04B35/493 ,  C04B2235/3217 ,  C04B2235/3251 ,  C04B2235/3262 ,  H01L41/187 ,  H03H9/02031 ,  H03H9/1035 ,  H03H9/176

    摘要： To obtain a piezoelectric ceramic composition having extremely high heat resisting property. Provided is a piezoelectric ceramic composition comprising a main component represented by Pba[(MnbNbc)dTieZrf]O3 (wherein 0.98≦a≦1.01, 0.340≦b≦0.384, 0.616≦c≦0.660, 0.08≦d≦0.12, 0.500≦e≦0.540, 0.37≦f≦0.41, bd+cd+e+f=1), and 1 to 10% by weight of Al in terms of Al2O3 as an additive. Preferably, b is such that 0.345≦b≦0.375 and c is such that 0.625≦c≦0.655, and the Al as the additive is preferably 2 to 6% by weight in terms of Al2O3.

    摘要翻译： 得到具有极高耐热性的压电陶瓷组合物。 本发明提供一种压电陶瓷组合物，其包含以下组分表示的主要成分：[（N，B）Nb C' （其中0.98 <= a <= 1.01,0.340 <= b <= 0.384,0.616 <= c 根据这个术语，<= 0.660,0.08 <= d <= 0.12,0.500 <= e <= 0.540,0.37 <= f <= 0.41，bd + cd + e + f = 1）和1〜10重量％ 的Al 2 O 3 3作为添加剂。 优选地，b为0.345≤b≤0.375，c为0.625 <= c <= 0.655，作为添加剂的Al优选为2〜6重量％ 3＆gt; 3＆lt; 3＆gt ;.

    Piezoelectric ceramic composition and oscillator
    9.
    发明授权
    Piezoelectric ceramic composition and oscillator 有权
    压电陶瓷组合物和振荡器

    公开(公告)号：US07839060B2

    公开(公告)日：2010-11-23

    申请号：US12251030

    申请日：2008-10-14

    申请人： Hideaki Sone ,  Masakazu Hirose ,  Tomohisa Azuma ,  Hideya Sakamoto

    发明人： Hideaki Sone ,  Masakazu Hirose ,  Tomohisa Azuma ,  Hideya Sakamoto

    IPC分类号： H01L41/187

    CPC分类号： C04B35/493 ,  H01L41/1876

    摘要： Provided is a piezoelectric ceramic composition which enables the attainment of sufficiently high Qmax and good temperature characteristics of oscillation frequency F0 when applied in an oscillator utilizing third harmonic mode of thickness longitudinal vibration. The piezoelectric ceramic composition contains a composite oxide having a perovskite structure. The composite oxide has a composition expressed by the chemical formula (1), while satisfying 0.91≦α≦1.00, 0

    摘要翻译： 提供一种压电陶瓷组合物，当应用于使用厚度纵向振动的三次谐波模式的振荡器中时，能够获得足够高的Qmax和振荡频率F0的良好温度特性。 压电陶瓷组合物含有具有钙钛矿结构的复合氧化物。 复合氧化物具有由化学式（1）表示的组成，同时满足0.91＆nlE;α＆nlE; 1.00,0 <＆bgr;＆lt; lE; 0.08,0.125＆amp; nlE; x＆lt; NE; 0.300,0.020＆amp; nlE; y＆nlE; 0.050和0.040＆ 其中Ln表示选自La，Ce，Pr，Nd，Pm，Sm，Eu中的至少一种元素，其中Ln表示至少一种选自La，Ce，Pr，Nd，Pm，Sm，Eu， Gd，Tb，Dy，Ho，Er，Tm，Yb和Lu。