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    Piezoelectric ceramic composition
    12.
    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

    申请人： Takeo Tsukada ,  Masahito Furukawa

    发明人： Takeo Tsukada ,  Masahito Furukawa

    IPC分类号： H01L41/187

    CPC分类号： C04B35/6262 ,  C04B35/462 ,  C04B35/475 ,  C04B35/49 ,  C04B35/638 ,  C04B2235/3201 ,  C04B2235/3215 ,  C04B2235/3244 ,  C04B2235/3251 ,  C04B2235/3262 ,  C04B2235/3293 ,  C04B2235/3294 ,  C04B2235/3298 ,  C04B2235/6562 ,  C04B2235/72 ,  C04B2235/768 ,  C04B2235/79

    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
    13.
    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

    申请人： Takeo Tsukada ,  Masahito Furukawa

    发明人： Takeo Tsukada ,  Masahito Furukawa

    IPC分类号： H01L41/187

    CPC分类号： C04B35/6262 ,  C04B35/462 ,  C04B35/475 ,  C04B35/49 ,  C04B35/638 ,  C04B2235/3201 ,  C04B2235/3215 ,  C04B2235/3244 ,  C04B2235/3251 ,  C04B2235/3262 ,  C04B2235/3293 ,  C04B2235/3294 ,  C04B2235/3298 ,  C04B2235/6562 ,  C04B2235/72 ,  C04B2235/768 ,  C04B2235/79

    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 ceramics and piezoelectric device
    14.
    发明授权
    Piezoelectric ceramics and piezoelectric device 失效
    压电陶瓷和压电器件

    公开(公告)号：US06207069B1

    公开(公告)日：2001-03-27

    申请号：US09255036

    申请日：1999-02-22

    申请人： Masahito Furukawa ,  Kazutaka Suzuki ,  Yoshiko Gokita ,  Takumi Satou ,  Keisuke Itakura

    发明人： Masahito Furukawa ,  Kazutaka Suzuki ,  Yoshiko Gokita ,  Takumi Satou ,  Keisuke Itakura

    IPC分类号： C04B35491

    CPC分类号： C04B35/493 ,  H01L41/107 ,  H01L41/187

    摘要： Manganese oxide and tantalum oxide are added to a piezoelectric ceramic composition based on lead zinc-niobate titanate zirconate. The composition is suitable for piezo-electric transformers since its mechanical quality factor (Qm) is improved without reducing its electromechanical coupling coefficient (k31), and good high-power properties and high mechanical strength are obtained. In another embodiment, manganese oxide and at least one of antimony oxide and niobium oxide are added to a piezoelectric ceramic composition based on lead zinc-niobate titanate zirconate.

    摘要翻译： 将氧化锰和氧化钽加入到基于锆钛酸铌酸铅的压电陶瓷组合物中。 该组合物适用于压电变压器，因为其机械品质因数（Qm）得到改善而不降低其机电耦合系数（k31），获得了良好的高功率特性和高机械强度。 在另一个实施方案中，将锰氧化物和氧化锑和氧化铌中的至少一种加入到基于铌酸铅锌铌酸酯钛酸酯的压电陶瓷组合物中。

    Piezoelectric ceramic composition
    15.
    发明授权
    Piezoelectric ceramic composition 有权
    压电陶瓷组合物

    公开(公告)号：US07901590B2

    公开(公告)日：2011-03-08

    申请号：US12076693

    申请日：2008-03-21

    申请人： Takeo Tsukada ,  Masahito Furukawa

    发明人： Takeo Tsukada ,  Masahito Furukawa

    IPC分类号： H01L41/187

    CPC分类号： C04B35/462

    摘要： A piezoelectric ceramic composition that acquires excellent piezoelectric properties even when it is fired at a low temperature is offered. The piezoelectric ceramic composition possesses a composition corresponding to a solid solution that contains a first compound having a rhombohedral crystal-based perovskite structure, a second compound having a tetragonal crystal-based perovskite structure, and a third compound. The third compound is a compound oxide containing Bi as a first component element, Fe or Mn as a second component element, and a hexavalent metallic element as a third component element. The hexavalent metallic element is at least one kind selected from W and Mo.

    摘要翻译： 提供即使在低温下烧制也能获得优异的压电特性的压电陶瓷组合物。 压电陶瓷组合物具有对应于包含具有菱形结晶基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。 第三化合物是包含Bi作为第一组分元素的复合氧化物，作为第二组分元素的Fe或Mn，以及作为第三组分元素的六价金属元素。 六价金属元素是选自W和Mo中的至少一种。

    Piezoelectric ceramic and piezoelectric device
    16.
    发明授权
    Piezoelectric ceramic and piezoelectric device 有权
    压电陶瓷和压电器件

    公开(公告)号：US06413443B1

    公开(公告)日：2002-07-02

    申请号：US09713216

    申请日：2000-11-16

    申请人： Masahito Furukawa ,  Junichi Yamazaki ,  Yoshiko Gokita

    发明人： Masahito Furukawa ,  Junichi Yamazaki ,  Yoshiko Gokita

    IPC分类号： H01L41107

    CPC分类号： H01L41/107 ,  C04B35/491 ,  H01L41/187

    摘要： The piezoelectric ceramic includes oxide represented by (Pb1−aAa)s[Zn1/3Nb2/3)w(Mn1/3B2/3)xTiyZrz]O3. A represents at least one element in the group comprising Ca, Sr and Ba. B represents at least one element in the group comprising Nb, Sb and Ta and a, s, w, x, y and z are within a range of 0≦a≦0.1, 0.9≦s

    摘要翻译： 压电陶瓷包括由（Pb1-aAa）s [Zn1 / 3Nb2 / 3）w（Mn1 / 3B2 / 3）xTiyZrz] O3表示的氧化物。 A表示包含Ca，Sr和Ba的组中的至少一种元素。 B表示包含Nb，Sb和Ta的组中的至少一种元素，a，s，w，x，y和z在0 <= a <= 0.1,0.9 <= s <1.0,0.2 < w / x <= 3.0,0.1 <= y <= 0.5和0.2 <= z <= 0.6，w + x + y + z = 1。 因此，可以容易且合理地获得高机械强度，并且在不研磨煅烧粉末或热压机的情况下也能获得优异的压电性能。

    Voltage-dependent nonlinear resistor
    17.
    发明授权
    Voltage-dependent nonlinear resistor 失效
    电压相关非线性电阻

    公开(公告)号：US5640136A

    公开(公告)日：1997-06-17

    申请号：US244380

    申请日：1994-06-09

    申请人： Masatada Yodogawa ,  Toshiyuki Yamazaki ,  Hitomi Naitou ,  Masahito Furukawa ,  Dai Matsuoka

    发明人： Masatada Yodogawa ,  Toshiyuki Yamazaki ,  Hitomi Naitou ,  Masahito Furukawa ,  Dai Matsuoka

    IPC分类号： H01C7/112 ,  H01C7/10

    CPC分类号： H01C7/112

    摘要： The invention provides a voltage-dependent nonlinear resistor porcelain in the form of a ZnO system sintered body comprising zinc oxide as a major component and at least one of rare earth element oxides, cobalt oxide, chromium oxide, at least one of Group IIIb element oxides, at least one of Group Ia element oxides, 0.01 to 2 atom % calculated as Ca of calcium oxide, and 0.001 to 0.5 atom % calculated as Si of silicon oxide as subordinate components, the atomic ratio of calcium to silicon (Ca/Si) ranging from 0.2 to 20. With the atomic ratio of calcium to silicon (Ca/Si) set between 0.2 and 20, preferably between 2 and 6, the element has a significantly increased load life at high temperature and humidity. The element experiences less deterioration of the asymmetry of its volt-ampere characteristic between different directions of DC conduction. If magnesium oxide is added to the composition in an amount of 0.05 to 10 atom % calculated as Mg, the benefits are enhanced, with grain growth suppressed and leakage current minimized even on high temperature firing.

    摘要翻译： PCT No.PCT / JP93 / 01456 Sec。 371日期：1994年6月9日 102（e）日期1994年6月9日PCT提交1993年10月8日PCT公布。 第WO94 / 09499号公报 日期1994年04月28日本发明提供一种以氧化锌为主要成分的ZnO系烧结体形式的电压依赖型非线性电阻器瓷，至少一种稀土元素氧化物，氧化钴，氧化铬，至少一种 的IIIb族元素氧化物，Ia族元素氧化物中的至少一种，作为氧化钙的Ca计算的0.01〜2原子％，作为Si的氧化硅作为下属成分计算的0.001〜0.5原子％，钙与硅的原子比 （Ca / Si）范围为0.2至20.由于钙与硅的原子比（Ca / Si）设定在0.2至20之间，优选为2至6，元素在高温和高湿下的负载寿命显着增加。 该元件在DC传导的不同方向之间的伏安特性的不对称性较差。 如果以Mg计为0.05〜10原子％的量向组合物中添加了氧化镁，则能够抑制晶粒生长，甚至在高温烧成时也使漏电流最小化。

    Piezoelectric ceramic composition
    20.
    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。