Process for making apatitic phosphors
    2.
    发明授权
    Process for making apatitic phosphors 失效
    制造磷灰石的方法

    公开(公告)号:US5336437A

    公开(公告)日:1994-08-09

    申请号:US69899

    申请日:1993-06-01

    IPC分类号: C09K11/76 C09K11/73

    CPC分类号: C09K11/76

    摘要: In a method of preparing an alkaline earth halophospor having an antimony content greater than about 0.70 weight percent, a uniform mixture of starting raw materials is fired with already fired phosphor of the desired alkaline earth halophosphate so that the already fired phosphor is refired in an inert atmosphere containing volitile species from the uniform mixture of starting raw materials.

    摘要翻译: 在制备锑含量大于约0.70重量%的碱土卤水的方法中,用已经焙烧的所需碱性碱性卤代磷酸盐的磷光体焙烧起始原料的均匀混合物,使得已经煅烧的磷光体在惰性 含有来自起始原料的均匀混合物的挥发物的气氛。

    Low-fire ceramic dielectric compositions
    3.
    发明授权
    Low-fire ceramic dielectric compositions 失效
    低火陶瓷电介质组合物

    公开(公告)号:US4459364A

    公开(公告)日:1984-07-10

    申请号:US417258

    申请日:1982-09-13

    CPC分类号: C04B35/4682 H01G4/1227

    摘要: A low-fired ceramic dielectric composition, a multilayer capacitor made from such a ceramic dielectric composition provided with silver/palladium electrodes having at least 65 atomic percent silver, and a method of manufacturing such a multilayer capacitor. The ceramic is barium titanate-based and includes Bi.sub.2 O.sub.3, Nb.sub.2 O.sub.5, and TiO.sub.2 to improve sinterability. MnCO.sub.3 is added to increase the insulation resistance. The multilayer capacitor includes high silver-content electrodes to reduce the quantity of expensive noble metals. The multilayer part may be fired at a temperature of 1150.degree. C. or less to yield a capacitor meeting EIA specification X7R. The low firing temperature also inhibits a chemical reaction between bismuth and palladium.

    摘要翻译: 低烧陶瓷电介质组合物,由具有至少65原子%银的银/钯电极的这种陶瓷电介质组合物制成的多层电容器以及制造这种多层电容器的方法。 该陶瓷是钛酸钡基,并且包括Bi 2 O 3,Nb 2 O 5和TiO 2以改善可烧结性。 添加MnCO3以增加绝缘电阻。 多层电容器包括高银含量的电极以减少昂贵的贵金属的量。 多层部分可以在1150℃或更低的温度下烧制,以产生符合EIA规范X7R的电容器。 低烧成温度也抑制铋和钯之间的化学反应。

    Nonlinear dielectric capacitor for pulse generation applications
    6.
    发明授权
    Nonlinear dielectric capacitor for pulse generation applications 失效
    用于脉冲发生应用的非线性介质电容器

    公开(公告)号:US4858066A

    公开(公告)日:1989-08-15

    申请号:US288740

    申请日:1988-12-22

    IPC分类号: C04B35/499 H01G4/12

    CPC分类号: H01G4/1263 C04B35/499

    摘要: An improved nonlinear dielectric element for use in ferroelectric ceramic capacitors is disclosed which exhibits higher operating temperatures and lower coercive field levels than the compositions presently in use. This new composition is based upon Pb(Mg.sub.0.33 Nb.sub.0.67)O.sub.3 as described by the general formulau[Pb(Mg.sub.0.33 Nb.sub.0.67)O.sub.3 ]+v[PbTiO.sub.3 ]+w[Pb(Me.sub.0.50 W.sub.0.50)O.sub.3 ],wherein u, v and w denote mole fractions, and Me represents a metal ion having a +2 valence such as Mg, Zn or Ni. In a preferred embodiment, u.gtoreq.0.65, v.ltoreq.0.35 and w.ltoreq.0.033.

    摘要翻译: 公开了一种用于铁电陶瓷电容器的改进的非线性介质元件,其显示比目前使用的组合物更高的操作温度和更低的矫顽场电位。 该新组合物基于通式u [Pb(Mg 0.33 Nb 0.67)O 3] + v [PbTiO 3] + w [Pb(Me 0.50 Mo 0.5)O 3]所述的Pb(Mg 0.33 Nb 0.67)O 3 ],其中u,v和w表示摩尔分数,Me表示具有+2价的金属离子,例如Mg,Zn或Ni。 在优选的实施方案中,u> = 0.65,v≤0.35且w 0.033。

    Low-fire ceramic dielectric compositions for multilayer ceramic
capacitors
    7.
    发明授权
    Low-fire ceramic dielectric compositions for multilayer ceramic capacitors 失效
    用于多层陶瓷电容器的低火陶瓷电介质组合物

    公开(公告)号:US4499521A

    公开(公告)日:1985-02-12

    申请号:US562324

    申请日:1982-12-16

    IPC分类号: C04B35/468 H01G4/12

    CPC分类号: C04B35/4682 H01G4/1227

    摘要: A low fire ceramic dielectric composition, a multilayer capacitor made from such a ceramic dielectric composition provided with silver/palladium electrodes having at least 65 atomic percent silver, and a method of manufacturing such a multilayer capacitor. The ceramic is barium titanate-based and includes Bi.sub.2 O.sub.3, Nb.sub.2 O.sub.5, and TiO.sub.2 to improve sinterability. MnCO.sub.3 is added to increase the insulation resistance. The multilayer capacitor includes high silver-content electrodes to reduce the quantity of expensive noble metals. The multilayer part may be fired at a temperature of 1150.degree. C. or less to yield a capacitor meeting EIA specification X7R. The low firing temperature also inhibits a chemical reaction between bismuth and palladium.

    摘要翻译: 一种低火陶瓷电介质组合物,由具有至少65原子%银的银/钯电极的这种陶瓷电介质组合物制成的多层电容器以及制造这种多层电容器的方法。 该陶瓷是钛酸钡基,并且包括Bi 2 O 3,Nb 2 O 5和TiO 2以改善可烧结性。 添加MnCO3以增加绝缘电阻。 多层电容器包括高银含量的电极以减少昂贵的贵金属的量。 多层部分可以在1150℃或更低的温度下烧制,以产生符合EIA规范X7R的电容器。 低烧成温度也抑制铋和钯之间的化学反应。

    Grain boundary barrier layer ceramic dielectrics and the method of
manufacturing capacitors therefrom
    8.
    发明授权
    Grain boundary barrier layer ceramic dielectrics and the method of manufacturing capacitors therefrom 失效
    晶界阻挡层陶瓷电介质及其制造电容器的方法

    公开(公告)号:US4309295A

    公开(公告)日:1982-01-05

    申请号:US120113

    申请日:1980-02-08

    CPC分类号: H01G4/1281 C04B35/47

    摘要: A major amount of strontium titanate is modified with additions of lanthanide series rare earth aluminates, titanates and transition metal oxides to provide sintered semiconductive ceramics with enhanced temperature and voltage stability. The modified strontium titanate ceramic, having the general formula:(1-x)SrTiO.sub.3 +x(1-y)[(1-z)LnAlO.sub.3 +zLn.sub..66 TiO.sub.3]+xyLnMO.sub.3,is coated with a fritted electrode material and fired at a temperature below the melting point of the electrode material to cause the frit to diffuse into the ceramic and form insulating boundaries around the ceramic grains. Ceramic capacitors so formed are characterized by their excellent electrical properties, particularly their improved temperature stability as evidenced by extremely low changes in capacitance with temperature.

    摘要翻译: 通过添加镧系稀土铝酸盐,钛酸盐和过渡金属氧化物来改性主要量的钛酸锶,以提供具有增强的温度和电压稳定性的烧结半导体陶瓷。 具有通式:(1-x)SrTiO3 + x(1-y)[(1-z)LnAlO3 + zL6.6TiO3] + xyLnMO3的改性钛酸锶陶瓷涂覆有烧结电极材料,并在 温度低于电极材料的熔点,导致玻璃料扩散到陶瓷中并在陶瓷颗粒周围形成绝缘边界。 如此形成的陶瓷电容器的特征在于它们具有优异的电性能,特别是其改善的温度稳定性,这通过极低的电容随温度的变化而证明。

    Process for making apatitic phosphors
    10.
    发明授权
    Process for making apatitic phosphors 失效
    制造磷灰石的方法

    公开(公告)号:US5232626A

    公开(公告)日:1993-08-03

    申请号:US902125

    申请日:1992-06-22

    IPC分类号: C09K11/76

    CPC分类号: C09K11/76

    摘要: In a method of preparing an alkaline earth halophospor having an antimony content greater than about 0.70 weight percent, a uniform mixture of starting raw materials is fired with already fired phosphor of the desired alkaline earth halophosphate so that the already fired phosphor is refired in an inert atmosphere containing volatile species from the uniform mixture of starting raw materials.