Method of manufacturing multilayer ceramic device
    7.
    发明申请
    Method of manufacturing multilayer ceramic device 审中-公开
    多层陶瓷器件的制造方法

    公开(公告)号:US20050213283A1

    公开(公告)日:2005-09-29

    申请号:US11079600

    申请日:2005-03-15

    摘要: A method of manufacturing a multilayer ceramic device capable of obtaining a superior multilayer ceramic device even if the number of layers increases or even if the multilayer ceramic device is upsized, and specifically suitable for manufacturing a multilayer piezoelectric device is provided. After a laminate in which ceramic precursor layers including a raw material of a ceramic layer and internal electrode precursor layers including copper metal as a raw material of an internal electrode layer are alternately stacked is formed, the laminate is heated to degrease the laminate. At this time, an atmospheric gas including an inert gas, 7 mol % to 50 mol % of water vapor, and, if necessary, hydrogen is used to adjust an oxygen partial pressure within a range of p(O2)≦(25331×Kp)2/3, where p(O2) represents an oxygen partial pressure; Kp represents a water dissociation equilibrium constant; and the pressure unit is Pa. Thereby, while the oxidation of copper metal can be prevented, a binder can be sufficiently decomposed and removed, and residual carbon can be reduced.

    摘要翻译: 即使层数增加,即使多层陶瓷器件大型化也能够得到优良的多层陶瓷器件的多层陶瓷器件的制造方法,特别适用于多层压电器件的制造。 在形成层叠体之后,层叠有层叠体,其中包括陶瓷层的原料的陶瓷前体层和包含作为内部电极层的原料的铜金属的内部电极前体层交替堆叠,加热层压体以使层压体脱脂。 此时,使用包含7mol%至50mol%水蒸气的惰性气体和必要时的氢气的气氛气体来调节p(O 2/2)范围内的氧分压, (25331×KP)2/3,其中p(O 2)2表示氧分压; Kp表示水解离平衡常数; 并且压力单位为Pa。由此,可以防止铜金属的氧化,可以充分分解和除去粘合剂,并且可以减少残留的碳。

    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

    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。

    Laminated piezoelectric element and production method of the same
    10.
    发明授权
    Laminated piezoelectric element and production method of the same 有权
    叠层压电元件及其制作方法相同

    公开(公告)号:US07564176B2

    公开(公告)日:2009-07-21

    申请号:US11684275

    申请日:2007-03-09

    IPC分类号: H01L41/187

    摘要: A laminated piezoelectric element capable of being sintered at low temperatures and high in piezoelectric properties is provided. The laminated piezoelectric element comprises a plurality of piezoelectric layers each comprising a composite oxide as a main constituent thereof and a plurality of internal electrode layers formed between the piezoelectric layers and containing Ag, wherein the piezoelectric layers are each comprised of a sintered body comprising the composite oxide, as a main constituent thereof, represented by (Pba-bMb) [(Zn1/3Nb2/3)xTiyZrz]O3 with the proviso that 0.96≦a≦1.03, 0≦b≦0.1, 0.05≦x≦0.15, 0.25≦y≦0.5, 0.35≦z≦0.6, x+y+z=1, and M represents at least one selected from Sr, Ca and Ba, and Ag in a content of 1.0% by weight or less (not inclusive of 0) in terms of Ag2O in relation to the main constituent.

    摘要翻译: 提供能够在低温下烧结并且压电性能高的层叠型压电元件。 叠层压电元件包括​​多个压电层,每个压电层包含复合氧化物作为其主要成分,并且在压电层之间形成并含有Ag的多个内部电极层,其中压电层各自包括包含复合氧化物的复合氧化物 氧化物作为其主要成分,由(Pba-bMb)[(Zn1 / 3Nb2 / 3)xTiyZrz] O3表示,条件是0.96 <= a <= 1.03,0 <= b <= 0.1,0.05 <= x <= 0.15,0.25 <= y <= 0.5,0.33 <= z <= 0.6,x + y + z = 1,M表示选自Sr,Ca和Ba中的至少一种,Ag的含量为1.0% (不包括0)以相对于主要成分的Ag 2 O计。