Cog dielectric with high K
    5.
    发明授权
    Cog dielectric with high K 失效
    高K电容

    公开(公告)号:US5238673A

    公开(公告)日:1993-08-24

    申请号:US889011

    申请日:1992-05-26

    IPC分类号: C04B35/462 H01G4/12

    CPC分类号: H01G4/1254 C04B35/462

    摘要: A composition consisting essentially of 60.0-70.0 mol % TiO.sub.2, 14.3-20.0 mol % Nd.sub.2 O.sub.3, 11.0-16.7 mol % BaO, 1.0-8.0 mol % ZrO.sub.2 and 0.05-0.30 mol % CeO.sub.2. This composition is useful for forming densified ceramic dielectric bodies having a dielectric constant of at least 65 and which meet COG specifications, and multilayer capacitors that contain such dielectric bodies.

    摘要翻译: 基本上由60.0-70.0mol%TiO 2,14.3-20.0mol%Nd 2 O 3,11.0-16.7mol%BaO,1.0-8.0mol%ZrO 2和0.05-0.30mol%CeO 2组成的组合物。 该组合物可用于形成具有至少65的介电常数且满足COG规格的致密陶瓷介电体,以及含有这种介电体的多层电容器。

    High K dielectric composition for use in multilayer ceramic capacitors
having copper internal electrodes
    8.
    发明授权
    High K dielectric composition for use in multilayer ceramic capacitors having copper internal electrodes 失效
    用于具有铜内部电极的多层陶瓷电容器中的高K电介质组合物

    公开(公告)号:US4855266A

    公开(公告)日:1989-08-08

    申请号:US161238

    申请日:1988-02-18

    申请人: Ian Burn

    发明人: Ian Burn

    IPC分类号: C04B35/468 H01G4/12

    CPC分类号: C04B35/4682 H01G4/129

    摘要: A dielectric composition is claimed consisting essentially of a donor- and acceptor-doped BaTiO.sub.3 having an intergranular phase of flux containing both glass-forming and glass-modifying ions. that can be co-fired in a low oxygen-containing atmosphere for the manufacture of multilayer capacitors having copper internal electrodes.

    摘要翻译: 要求的电介质组合物基本上由具有包含玻璃形成和玻璃修饰离子的熔剂的晶间相的施主和受体掺杂的BaTiO 3组成。 其可以在低含氧气氛中共烧,用于制造具有铜内部电极的多层电容器。

    Low firing monolithic ceramic capacitor with high dielectric constant
    9.
    发明授权
    Low firing monolithic ceramic capacitor with high dielectric constant 失效
    低介电常数陶瓷电容器

    公开(公告)号:US4283753A

    公开(公告)日:1981-08-11

    申请号:US79685

    申请日:1979-09-28

    申请人: Ian Burn

    发明人: Ian Burn

    IPC分类号: C04B35/468 H01G4/12 C04B35/46

    摘要: The ceramic body of a monolithic ceramic capacitor consists of a granular barium titanate phase and a relatively low temperature melting intergranular phase. The body is capable of exhibiting a very high dielectric constant, e.g., over 5000, a Curie temperature of near 25.degree. C., and may be fired to maturity at 1150.degree. C. or lower and contain low cost buried electrodes. These properties obtain from a narrow range of compositions for which charge balance and large/small cation stoichiometry in the total formulation are found to be very critical. Cd, Zn, Cu, Li and Na are found to enter the grains as large acceptor cations on Ba sites and may be charge compensated by the small donor cations of charge +5, Bi, Sb, Nb and Ta or by the small donor cations of charge +6, W and Mo, on the Ti sites. At least 0.3 mole percent of glass-former cations are desirable for establishing a low melting flux during sintering but more than 2.2 mole percent glass-formers tends to reduce the dielectric constant.

    摘要翻译: 单片陶瓷电容器的陶瓷体由粒状钛酸钡相和相对低温熔化的晶间相组成。 身体能够表现出非常高的介电常数,例如超过5000,居里温度接近25℃,并且可以在1150℃或更低温度下焙烧成熟,并含有低成本的埋入电极。 这些性质从组合物的窄范围获得,其中发现总配方中的电荷平衡和大/小阳离子化学计量学非常关键。 发现Cd,Zn,Cu,Li和Na作为Ba位置上的大受体阳离子进入晶粒,并可以通过电荷+5,Bi,Sb,Nb和Ta的小供体阳离子或小的供体阳离子 的电荷+6,W和Mo,在Ti位置。 至少0.3摩尔百分比的玻璃形成阳离子是期望的,以便在烧结期间建立低熔点的熔剂,但大于2.2摩尔%的玻璃 - 成型剂倾向于降低介电常数。

    Temperature stable monolithic ceramic capacitor with base metal
electrodes
    10.
    发明授权
    Temperature stable monolithic ceramic capacitor with base metal electrodes 失效
    具有贱金属电极的温度稳定的单片陶瓷电容器

    公开(公告)号:US3987347A

    公开(公告)日:1976-10-19

    申请号:US582060

    申请日:1975-05-29

    申请人: Ian Burn

    发明人: Ian Burn

    IPC分类号: H01G4/12

    CPC分类号: H01G4/1245

    摘要: A monolithic ceramic capacitor having base metal electrodes is described that meets the standard TCC limits of .+-. 15% from -55.degree. C to 125.degree. C. The ceramic includes small quantities of acceptor dopants, particularly manganese added to barium titanate and an alkali-earth-metal-zirconate. When fired from 1250.degree. C to 1400.degree. C in a partial oxygen atmosphere of 10.sup..sup.-7 to 10.sup..sup.-9 atmospheres of oxygen, a liquid phase sintering occurs during which the titanate-zirconate grains do not grow and there is formed a concentration gradient of the zirconate near the grain surfaces while a liquid manganese titanate forms a second and immiscible phase in the grain boundary regions.

    摘要翻译: 描述了具有贱金属电极的单片陶瓷电容器,其满足从-55℃至125℃的±15%的标准TCC限值。陶瓷包括少量的受主掺杂剂,特别是添加到钛酸钡和碱中的锰 - 金属 - 锆酸盐。 当在10 -7〜10 -9个大气压的氧的部分氧气气氛中从1250 + 20(0℃至1400℃)烧制时,发生液相烧结,在此期间钛酸锆 - 锆酸盐颗粒不生长, 在晶粒表面附近形成锆酸盐的浓度梯度,而液体锰酸钛在晶界区域中形成第二和不混溶相。