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    Dielectric ceramic composition for microwave
    1.
    发明授权
    Dielectric ceramic composition for microwave 失效
    用于微波的介电陶瓷组合物

    公开(公告)号：US5750452A

    公开(公告)日：1998-05-12

    申请号：US804280

    申请日：1997-03-03

    申请人： Jung-Rae Park ,  Tae-Hong Kim ,  Suk-Jin Lee ,  Tae-Goo Choy

    发明人： Jung-Rae Park ,  Tae-Hong Kim ,  Suk-Jin Lee ,  Tae-Goo Choy

    IPC分类号： C04B35/46 ,  C04B35/462 ,  H01B3/12 ,  H01P7/10 ,  C04B35/468 ,  C04B35/472

    CPC分类号： C04B35/462

    摘要： The present invention relates to a dielectric ceramic composition for microwave which consists of BaO, Sm.sub.2 O.sub.3, TiO.sub.2 and PbO, and has a compositional formula of x(Ba.sub.1-.alpha., Pb.sub..alpha.)O-- ySm.sub.2 O.sub.3 -zTiO.sub.2, wherein 6 mol % .ltoreq.x.ltoreq.20 mol %, 6 mol %.ltoreq.y.ltoreq.20 mol %, 60 mol %.ltoreq.z.ltoreq.75 mol % and 0 mol % .ltoreq..alpha..ltoreq.0.2 mol %. Accordingly, since the dielectric ceramic composition for microwave according to the present invention has the dielectric constant more than 85, the temperature factor of the resonant frequency within .+-.5 ppm/.degree.C., and the quality factor more than 6000 in 1 GHz, it can be utilized in the filter for microwave, the dielectric for the resonator, the laminated ceramic capacitor, the dielectric for the filter for electromagnetic wave obstacle and the dielectric for capacitor. And also, since it is possible to reduce the problems to the volatilization of the plumbic oxide and the bismuth oxide, the dielectric ceramic composition for microwave according to the present invention can be made by a general manufacturing process and can reduce the use of the elements detrimental to the human body.

    摘要翻译： 本发明涉及由BaO，Sm2O3，TiO2和PbO组成的微波介电陶瓷组合物，其组成式为x（Ba1-α，Pba）O-ySm2O3-zTiO2，其中6mol％ x = 20摩尔％，6摩尔％≤y20摩尔％，60摩尔％≤75摩尔％，0摩尔％≤0.2摩尔％。 因此，由于本发明的微波用电介质陶瓷组合物的介电常数大于85，谐振频率的温度系数在±5ppm /℃以内，1GHz的质量因子大于6000 ，可以用于微波滤波器，谐振器的电介质，层叠陶瓷电容器，用于电磁波障碍物的滤波器的电介质和用于电容器的电介质。 并且，由于可以减少铅酸铅和氧化铋的挥发的问题，根据本发明的微波介电陶瓷组合物可以通过一般的制造方法制造，并且可以减少元素的使用 有害于人体。

    Magnetic ceramic composition for use in microwave devices, magnetic ceramics for use in microwave devices, and preparation method therefor
    2.
    发明授权
    Magnetic ceramic composition for use in microwave devices, magnetic ceramics for use in microwave devices, and preparation method therefor 失效
    用于微波器件的磁性陶瓷组合物，用于微波器件的磁性陶瓷及其制备方法

    公开(公告)号：US5902514A

    公开(公告)日：1999-05-11

    申请号：US903773

    申请日：1997-07-31

    申请人： Jung-Rae Park ,  Tae-Hong Kim ,  Sang-Seok Lee ,  Tae-Goo Choy

    发明人： Jung-Rae Park ,  Tae-Hong Kim ,  Sang-Seok Lee ,  Tae-Goo Choy

    IPC分类号： C04B35/00 ,  C04B35/26 ,  C04B35/40 ,  C04B35/50 ,  H01F1/34

    CPC分类号： C04B35/26 ,  H01F1/346

    摘要： A material for microwave band devices used by the general people and in industrial electronic apparatuses is disclosed. Particularly, a magnetic ceramic composition for use in microwave devices, a magnetic ceramics for use in microwave devices and a preparation method therefore are disclosed, in which the saturation magnetization can be easily controlled, and a low ferri-magnetic resonance half line width and an acceptable curie temperature are ensured. The magnetic ceramic composition for microwave devices includes yttrium oxide (Y.sub.2 O.sub.3), iron oxide (Fe.sub.2 O.sub.3), tin oxide (SnO.sub.2), aluminum oxide (Al.sub.2 O.sub.3) and a calcium supply source. The magnetic ceramics for the microwave devices are manufactured by carrying out a forming and a sintering after mixing: yttrium oxide, iron oxide, tin oxide, aluminum oxide and calcium carbonate (or calcium oxide) based on a formula shown below. It has a saturation magnetization of 100-1,800 G at the normal temperature, a temperature coefficient for the saturation magnetization of 0.2%/.degree.C., and a ferri-magnetic resonance half line width of less than 60 Oe, Y.sub.3-x Ca.sub.x/2 Sn.sub.x/2 Fe.sub.5-y Al.sub.y O.sub.12 where 0.1.ltoreq.x.ltoreq.1, and 0.1.ltoreq.y.ltoreq.1.5.

    摘要翻译： 公开了一般用户和工业电子设备中使用的微波带装置的材料。 特别地，公开了一种用于微波器件的磁性陶瓷组合物，用于微波器件的磁性陶瓷及其制备方法，其中可以容易地控制饱和磁化强度，并且低铁磁共振半线宽度和 确保可接受的居里温度。 用于微波器件的磁性陶瓷组合物包括氧化钇（Y 2 O 3），氧化铁（Fe 2 O 3），氧化锡（SnO 2），氧化铝（Al 2 O 3）和钙供应源。 用于微波器件的磁性陶瓷通过以下所示的配方在混合之后进行成形和烧结来制造：氧化钇，氧化铁，氧化锡，氧化铝和碳酸钙（或氧化钙）。 在正常温度下饱和磁化强度为100-1800G，饱和磁化强度的温度系数为0.2％/℃，铁磁共振半线宽度小于60Oe，Y3-xCax / 2Snx / 2Fe5-yAlyO12，其中0.1≤x≤1，0.1≤y≤1.5。