Ceramic capacitor and method for making the same
    2.
    发明授权
    Ceramic capacitor and method for making the same 有权
    陶瓷电容器及其制作方法

    公开(公告)号:US06301092B1

    公开(公告)日:2001-10-09

    申请号:US09591298

    申请日:2000-06-09

    IPC分类号: H01G406

    摘要: A ceramic capacitor has a dielectric ceramic layer and at least one pair of electrodes. The dielectric ceramic layer has a primary phase and secondary phases, and the size of the secondary phases in the thickness direction of the dielectric ceramic layer is not more than about one-third of the thickness of the dielectric ceramic layer. A method for making the ceramic capacitor includes the steps of mixing compounds constituting secondary phases in a primary phase of a dielectric ceramic, annealing and then pulverizing the mixture to prepare a raw material for the secondary phases, mixing the raw material for the secondary phases with other materials for the dielectric ceramic shaping and sintering the mixture to form a dielectric ceramic, and forming electrodes on the dielectric ceramic. The ceramic capacitor has high insulation resistance, superior load characteristics at high temperatures or high humidity and high weather resistance, even when sintered in a reducing atmosphere.

    摘要翻译: 陶瓷电容器具有介电陶瓷层和至少一对电极。 电介质陶瓷层具有主相和次相,并且介电陶瓷层的厚度方向上的次相的尺寸不超过介电陶瓷层的厚度的约三分之一。 制造陶瓷电容器的方法包括以下步骤:将构成第二相的化合物混合在电介质陶瓷的初生相中,退火然后粉碎混合物以制备二次相的原料,将第二相的原料与 电介质陶瓷的其他材料成型并烧结混合物以形成电介质陶瓷,并在电介质陶瓷上形成电极。 陶瓷电容器具有高绝缘电阻,在高温或高湿度下具有优异的负载特性和高耐候性,即使在还原气氛中烧结也是如此。

    Dielectric ceramic composition and monolithic ceramic capacitor
    8.
    发明授权
    Dielectric ceramic composition and monolithic ceramic capacitor 有权
    介电陶瓷组合物和单片陶瓷电容器

    公开(公告)号:US06380116B1

    公开(公告)日:2002-04-30

    申请号:US09626477

    申请日:2000-07-26

    IPC分类号: C04B35468

    CPC分类号: C04B35/4682 H01G4/1227

    摘要: A dielectric ceramic composition comprises a compound oxide comprising barium titanate BamTiO3 as a major component and RO3/2, CaO, MgO, and SiO2, as accessory components, wherein R is at least one element selected from the group consisting of Y, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm and Yb, wherein the compound oxide satisfies the following relationship: 100BamTiO3+aRO3/2+bCaO+cMgO+dSiO2, wherein, on a molar basis, 0.990≦m≦1.030, 0.5≦a≦6.0, 0.10≦b≦5.00, 0.010≦c

    摘要翻译: 电介质陶瓷组合物包括作为主要成分的复合氧化物,其包含作为主要成分的钛酸钡BamTiO 3和作为附加成分的RO3 / 2,CaO,MgO和SiO2,其中R是选自Y,Sm,Eu中的至少一种元素 ,Gd,Tb,Dy,Ho,Er,Tm和Yb,其中复合氧化物满足以下关系:100BamTiO3 + aRO3 / 2 + bCaO + cMgO + dSiO2,其中,以摩尔计为0.990 <= m <= 1.030 ,0.5 <= a <= 6.0,0.10 <= b <= 5.00,0.010 <= c <1.000和0.05 <= d <2.00。 电介质陶瓷组合物满足由日本工业标准(JIS)定义的B特性和由EIA标准定义的关于静电电容对温度的依赖性的X7R特性,并且具有绝缘电阻和静电电容的大CR产物 。 包含由该介电陶瓷组合物构成的薄电介质层的叠层陶瓷电容器是高度可靠的。

    Non-reducing dielectric ceramic, monolithic ceramic capacitor using the same, and method for making non-reducing dielectric ceramic
    9.
    发明授权
    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:US06730624B2

    公开(公告)日:2004-05-04

    申请号:US10427978

    申请日:2003-05-02

    IPC分类号: C04B35465

    摘要: A non-reducing dielectric ceramic contains Ca, Zr and Ti as metallic elements and does not contain Pb. In a CuK&agr; X-ray diffraction pattern, the ratio of the maximum peak intensity of secondary crystal phases to the maximum peak intensity at 2&thgr;=25° to 35° 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.

    摘要翻译: 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。

    Method of producing a monolithic ceramic capacitor
    10.
    发明授权
    Method of producing a monolithic ceramic capacitor 失效
    制造叠层陶瓷电容器的方法

    公开(公告)号:US06442813B1

    公开(公告)日:2002-09-03

    申请号:US09058081

    申请日:1998-04-09

    IPC分类号: H01G907

    摘要: A monolithic ceramic capacitor includes a plurality of dielectric ceramic layers, a plurality of inner electrodes formed between the dielectric ceramic layers in such a manner that one end of each inner electrode is exposed out of either end of the dielectric ceramic layers, and outer electrodes electrically connected with the exposed inner electrodes; in which the inner electrodes each are made of a base metal, and Si oxide layers or layers comprising an Si oxide and at lest one component that constitutes said dielectric ceramic layers and said inner electrodes are formed adjacent to the inner electrodes. The capacitor has excellent thermal impact resistance and wet load resistance characteristics. A producing method includes firing a green sheet laminate including a metal inner electrode at an oxygen partial pressure of about said equilibrium oxygen partial pressure of the metal to the metal oxide.

    摘要翻译: 单片陶瓷电容器包括多个电介质陶瓷层,多个内电极,形成在电介质陶瓷层之间,使每个内电极的一端从电介质陶瓷层的任一端露出,外电极电 与暴露的内部电极连接; 其中内部电极各自由贱金属制成,并且包括Si氧化物的Si氧化物层或构成所述介电陶瓷层和所述内部电极的至少一个部件的Si形成在与内部电极相邻的位置。 电容器具有优异的耐热冲击性和耐湿负载特性。 一种制造方法包括以大约金属的平衡氧分压的氧分压与金属氧化物烧结包含金属内电极的生片层压体。