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    Dielectric ceramic composition, ceramic capacitor using the composition and method of producing thereof
    2.
    发明申请
    Dielectric ceramic composition, ceramic capacitor using the composition and method of producing thereof 失效
    介电陶瓷组合物，陶瓷电容器的组成及其制造方法

    公开(公告)号：US20020002108A1

    公开(公告)日：2002-01-03

    申请号：US09822869

    申请日：2001-03-30

    Inventor： Jong Hee Kim ,  Shigehiro Fujino ,  Nobutake Hirai

    IPC: C04B035/48 ,  C04B035/49

    CPC classification number: C04B35/491 ,  C04B35/47 ,  C04B35/48 ,  C04B35/49

    Abstract: The present invention provides a dielectric ceramic composition, a capacitor using the composition and the producing method, of having a lower dielectric loss and a stable characteristics in high frequency bandwidth, and enabling to use a base metal or a carbon-based material as an electrode material by allowing sintering at a low temperature, thereby resulting in lower cost. The dielectric ceramic composition according to present invention, is characterized in comprising a main component of formula SrxMg1-x(ZryTi1-y)O3 (where 0.8nullxnull1; 0.9nullynull1) to which MnO2 of 0.05-15 wt %, at least one of 0.001-5 wt % selected from the group consisting of Bi2O3, PbO and Sb2O3 and a glass component of 0.5-15 wt % are added based on the weight of the main component.

    Abstract translation: 本发明提供一种电介质陶瓷组合物，使用该组合物和制造方法的电容器，其具有较低的介电损耗和高频带宽的稳定特性，能够使用贱金属或碳基材料作为电极 通过在低温下进行烧结从而导致成本降低。 根据本发明的介电陶瓷组合物的特征在于，其中MnO 2为0.05的式Sr x Mg 1-x（ZryTi 1-y）O 3（其中0.8 <= x <= 1; 0.9 <= y <= 1）的主要成分 -15重量％，基于主成分的重量，添加选自Bi 2 O 3，PbO和Sb 2 O 3的0.001-5重量％和0.5〜15重量％的玻璃成分中的至少一种。

    Non-reducing dielectric ceramic, monolithic ceramic capacitor using the same, and method for making non-reducing dielectric ceramic
    3.
    发明申请
    Non-reducing dielectric ceramic, monolithic ceramic capacitor using the same, and method for making non-reducing dielectric ceramic 有权
    非还原电介质陶瓷，使用其的叠层陶瓷电容器，以及制造非还原电介质陶瓷的方法

    公开(公告)号：US20010039239A1

    公开(公告)日：2001-11-08

    申请号：US09828013

    申请日：2001-04-06

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Tomoo Motoki ,  Masahiro Naito ,  Harunobu Sano

    IPC: C04B035/49 ,  H01G004/06

    CPC classification number: C04B35/465 ,  H01G4/1227 ,  H01G4/1236 ,  H01G4/1245

    Abstract: A non-reducing dielectric ceramic contains Ca, Zr and Ti as metallic elements and does not contain Pb. In a CuKnull X-ray diffraction pattern, the ratio of the maximum peak intensity of secondary crystal phases to the maximum peak intensity at 2nullnull25null to 35null of a perovskite primary crystal phase is about 12% or less, the secondary crystal phases including all the crystal phases other than the perovskite primary crystal phase. The non-reducing dielectric ceramic exhibits superior insulating resistance and dielectric loss after firing in a neutral or reducing atmosphere and high reliability in a high-temperature loading lifetime test and is useful for producing compact high-capacitance monolithic ceramic capacitors.

    Abstract translation: 非还原电介质陶瓷含有Ca，Zr和Ti作为金属元素，不含Pb。 在CuKαX射线衍射图中，二次晶相的最大峰强度与钙钛矿一次结晶相的2θ= 25°〜35°的最大峰强度的比例为约12％以下，二次结晶相 包括除了钙钛矿一级结晶相以外的所有晶相。 非还原电介质陶瓷在中性或还原性气氛中焙烧后具有优异的绝缘电阻和介电损耗，并且在高温负载寿命试验中具有高可靠性，并且可用于生产紧凑型大电容单片陶瓷电容器。

    Piezoelectric ceramic and manufacturing method therefor
    5.
    发明申请
    Piezoelectric ceramic and manufacturing method therefor 失效
    压电陶瓷及其制造方法

    公开(公告)号：US20010012815A1

    公开(公告)日：2001-08-09

    申请号：US09773398

    申请日：2001-01-31

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Akihiro Nakamichi ,  Koichi Hayashi ,  Akira Ando

    IPC: C04B035/46 ,  C04B035/48 ,  C04B035/49

    CPC classification number: H01L41/187 ,  C04B35/472

    Abstract: A piezoelectric ceramic for producing a piezoelectric element having sufficient strength and hardness in spite of compactness is provided. The piezoelectric ceramic contains lead titanate as a primary component and about 0.1 to 5% by weight of tungsten in terms of WO3 relative to the primary component, and about 75% or more of crystal particles constituting the piezoelectric ceramic have particle diameters distributed in the range of about 0.2 nullm to 0.8 nullm.

    Abstract translation: 提供了一种用于制造具有足够的强度和硬度的压电元件的压电陶瓷，尽管其紧凑性。 压电陶瓷含有钛酸铅作为主要成分，以相对于主要成分为WO 3为约0.1〜5重量％的钨，构成压电陶瓷的结晶粒子的约75重量％以上的粒径分布在该范围内 约0.2μm至0.8μm。

    Piezoelectric/electrostrictive material and process for production thereof
    7.
    发明申请
    Piezoelectric/electrostrictive material and process for production thereof 失效
    压电/电致伸缩材料及其生产方法

    公开(公告)号：US20030146406A1

    公开(公告)日：2003-08-07

    申请号：US10325643

    申请日：2002-12-19

    Applicant: NGK Insulators, Ltd.

    Inventor： Hirofumi Yamaguchi ,  Takaaki Koizumi

    IPC: C04B035/46 ,  C04B035/48 ,  C04B035/49

    CPC classification number: C04B35/468 ,  C04B2235/3213 ,  C04B2235/3251 ,  C04B2235/3281 ,  C04B2235/72 ,  C04B2235/79 ,  H01L41/187

    Abstract: A piezoelectric/electrostrictive material is made of a BaTiO3-based porcelain composed mainly of BaTiO3, and a strain (S4000) of transversal direction is 650null10null6 or more in an electric field of 4,000 V/mm. This porcelain has a Curie temperature of 110 to 130null C., and its crystal phase at ambient temperature consists essentially of tetragonal and cubic phases. The piezoelectric/electrostrictive material being composed of this porcelain is superior in strain to conventional products, and can be suitably used in an actuator or a sensor.

    Abstract translation: 压电/电致伸缩材料由主要由BaTiO 3组成的BaTiO 3系瓷器制成，在4000V / mm的电场中横向的应变（S4000）为650×10 -6以上。 该陶瓷的居里温度为110〜130℃，其环境温度的结晶相主要由四方晶相组成。 由该陶瓷构成的压电/电致伸缩材料在应变与常规产品相比是优异的，并且可以适用于致动器或传感器。

    Piezoelectric ceramic composition reducing leakage current and piezoelectric device using the same
    8.
    发明申请
    Piezoelectric ceramic composition reducing leakage current and piezoelectric device using the same 失效
    压电陶瓷组合物减少泄漏电流和使用其的压电器件

    公开(公告)号：US20030132418A1

    公开(公告)日：2003-07-17

    申请号：US10067814

    申请日：2002-02-08

    Applicant: Samsung Electro-Mechanics Co., Ltd.

    Inventor： Sang Koo Kwon ,  Kang Heon Hur ,  Jong Kuk Hong ,  Dong Hwan Seo

    IPC: C04B035/46 ,  C04B035/48 ,  C04B035/49

    CPC classification number: C04B35/493 ,  C04B2235/3241 ,  C04B2235/3249 ,  C04B2235/3258 ,  C04B2235/3267 ,  C04B2235/3275 ,  C04B2235/3296 ,  H01L41/1876

    Abstract: Disclosed is a piezoelectric ceramic composition comprising a PZT piezoelectric composition, a B-site of which is substituted with a certain material, and chromium oxide, and a piezoelectric device using the piezoelectric ceramic composition. The piezoelectric ceramic composition has good heat resistance and frequency stability, and reduces a leakage current. There is provided the piezoelectric ceramic composition comprising a main component expressed by Pbnull(Co1/2W1/2)xTi1-x-yZrynullO3 (wherein, 0.001nullxnull0.04, and 0.35nullynull0.55), Cr2O3 in an amount of 0.01 to 2 wt %, MnO2 in an amount of 0.1 to 0.5 wt %, and an additive in an amount of 0.01 to 2.0 wt %, based on the total weight of the piezoelectric ceramic composition, in which the additive is selected from the group consisting of CoO, MgO, ZnO, Al2O3, Fe2O3, Sb2O3, SnO2, CeO2, Nb2O5, V2O5 and WO3, and mixtures thereof. The piezoelectric ceramic composition satisfies piezoelectric properties such as kp and Qm needed for a piezoelectric material, and is 320null C. or higher in phase transition temperature, null30 ppm/null C. in TCF, and 0.1 % or less in oscillation frequency change after reflow; and the piezoelectric ceramic composition also has good piezoelectric properties such that the leakage current is reduced.

    Abstract translation: 本发明公开了一种压电陶瓷组合物和使用该压电陶瓷组合物的压电装置，其中PZT压电组合物的B部位用某种材料代替，氧化铬。 压电陶瓷组合物具有良好的耐热性和频率稳定性，并且减小了漏电流。 提供了包含由Pb [（Co1 / 2W1 / 2）xTi1-x-yZry] O3（其中0.001≤x≤0.04,0.35≤y≤0.55）表示的主成分的压电陶瓷组合物， 0.01〜2重量％的Cr 2 O 3，0.1〜0.5重量％的MnO 2，0.01〜2.0重量％的添加剂，以压电陶瓷组合物的总重量计，其中添加剂 选自CoO，MgO，ZnO，Al2O3，Fe2O3，Sb2O3，SnO2，CeO2，Nb2O5，V2O5和WO3，以及它们的混合物。 压电陶瓷组合物满足压电材料所需的压电特性如kp和Qm，在TCF中相变温度为320℃或更高，±30ppm /℃，振荡频率变化为0.1％以下 回流后 并且压电陶瓷组合物也具有良好的压电性能，使得泄漏电流降低。

    Electronically tunable, low-loss ceramic materials including a tunable dielectric phase and multiple metal oxide phases
    10.
    发明申请
    Electronically tunable, low-loss ceramic materials including a tunable dielectric phase and multiple metal oxide phases 有权
    电子可调谐的低损耗陶瓷材料，包括可调电介质相和多个金属氧化物相

    公开(公告)号：US20020165080A1

    公开(公告)日：2002-11-07

    申请号：US09768690

    申请日：2001-01-24

    Inventor： Louise C. Sengupta ,  Xubai Zhang ,  Luna H. Chiu

    IPC: C04B035/46 ,  C04B035/48 ,  C04B035/49

    CPC classification number: C04B35/495 ,  C04B35/462

    Abstract: Electronically tunable dielectric materials having favorable properties are disclosed. The electronically tunable materials include an electronically tunable dielectric phase such as barium strontium titanate in combination with at least two additional metal oxide phases. The additional metal oxide phases may include, for example, oxides of Mg, Si, Ca, Zr, Ti and Al. The electronically tunable materials may be provided in bulk, thin film and thick film forms for use in devices such as phased array antennas, tunable filters and the like. The materials are useful in many applications, including the area of radio frequency engineering and design.

    Abstract translation: 公开了具有良好性能的电可调电介质材料。 电子可调谐材料包括电子可调电介质相，例如钛酸锶钡与至少两个另外的金属氧化物相结合。 附加的金属氧化物相可以包括例如Mg，Si，Ca，Zr，Ti和Al的氧化物。 电子可调谐材料可以以体积，薄膜和厚膜形式提供，用于诸如相控阵天线，可调谐滤波器等的装置。 这些材料在许多应用中是有用的，包括射频工程和设计领域。

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