Spark plug having particular insulator
    23.
    发明授权
    Spark plug having particular insulator 有权
    具有特定绝缘体的火花塞

    公开(公告)号:US08093791B2

    公开(公告)日:2012-01-10

    申请号:US12598459

    申请日:2009-03-26

    IPC分类号: H01T13/20

    摘要: An object of the invention is to provide a spark plug including an insulator which is difficult to cause breakdown and exhibits higher withstand voltage characteristics. This invention relates to a spark plug 1 including a center electrode 2, an insulator 3 and a grounding electrode 6, wherein the insulator is formed by an alumina-based sintered body which has a theoretical density ratio of 95.0% or more, which contains a rare earth element component, Si component, and at least two kinds of Group 2 element (2A) components, and in which the rare earth element being dispersed so as to satisfy the following condition: when 7 places of measurement line (measurement length: 180 μm) are selected in the alumina-based sintered body and the rare earth element (RE) present in each of selected measurement lines is analyzed with an energy dispersion method, a total number of measurement lines in which 8 or more peaks derived from the rare earth element (RE) are observed is 4 places or more of the 7 places.

    摘要翻译: 本发明的目的是提供一种火花塞,其包括难以引起击穿并且具有更高的耐受电压特性的绝缘体。 本发明涉及一种火花塞1,其包括中心电极2,绝缘体3和接地电极6,其中绝缘体由理论密度比为95.0%以上的氧化铝基烧结体形成,该氧化铝基烧结体含有 稀土元素成分,Si成分,以及至少2种2族元素(2A)成分,稀土类元素分散以满足以下条件:条件>当测量线7(测量值) 长度:180μm),并且使用能量分散法分析存在于所选择的测量线中的稀土元素(RE),其中8个或更多个峰衍生的测量线的总数 从稀土元素(RE)观察到的是7个地方的4个或更多个。

    PIEZOELECTRIC CERAMIC COMPOSITION AND PIEZOELECTRIC ELEMENT MADE BY USING THE SAME
    25.
    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。

    SPARK PLUG
    26.
    发明申请
    SPARK PLUG 有权
    SPARK插头

    公开(公告)号:US20100084960A1

    公开(公告)日:2010-04-08

    申请号:US12598459

    申请日:2009-03-26

    IPC分类号: H01T13/20

    摘要: An object of the invention is to provide a spark plug including an insulator which is difficult to cause breakdown and exhibits higher withstand voltage characteristics. This invention relates to a spark plug 1 including a center electrode 2, an insulator 3 and a grounding electrode 6, wherein the insulator is formed by an alumina-based sintered body which has a theoretical density ratio of 95.0% or more, which contains a rare earth element component, Si component, and at least two kinds of Group 2 element (2A) components, and in which the rare earth element being dispersed so as to satisfy the following condition: when 7 places of measurement line (measurement length: 180 μm) are selected in the alumina-based sintered body and the rare earth element (RE) present in each of selected measurement lines is analyzed with an energy dispersion method, a total number of measurement lines in which 8 or more peaks derived from the rare earth element (RE) are observed is 4 places or more of the 7 places.

    摘要翻译: 本发明的目的是提供一种火花塞,其包括难以引起击穿并且具有更高的耐受电压特性的绝缘体。 本发明涉及一种火花塞1,其包括中心电极2,绝缘体3和接地电极6,其中绝缘体由理论密度比为95.0%以上的氧化铝基烧结体形成,该氧化铝基烧结体含有 稀土元素成分,Si成分,以及至少2种2族元素(2A)成分,稀土类元素分散以满足以下条件:条件>当测量线7(测量值) 长度:180μm),并且使用能量分散法分析存在于所选择的测量线中的稀土元素(RE),其中8个或更多个峰衍生的测量线的总数 从稀土元素(RE)观察到的是7个地方的4个或更多个。