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    • 73. 发明申请
    • Dielectric ceramic composition and method
    • 介电陶瓷组成及方法
    • US20060094586A1
    • 2006-05-04
    • US10978588
    • 2004-11-01
    • Qi TanJeffrey Jacquin
    • Qi TanJeffrey Jacquin
    • C04B35/478
    • C04B35/117C04B35/6263C04B35/62655C04B35/63C04B35/632C04B2235/3203C04B2235/3215C04B2235/3232C04B2235/3251C04B2235/3265C04B2235/3267C04B2235/3279C04B2235/3284C04B2235/3293C04B2235/3298C04B2235/608C04B2235/77
    • Multiphase metal oxide ceramic compositions suitable for use in microwave band filters for telecommunications equipment are composites of metal oxides which comprise, on an elemental weight basis, about 42 to about 50% aluminum, about 2.5 to about 6% titanium, about 0.05 to about 1.5% niobium, about 0.04 to about 1% barium, about 0.03 to about 0.7% zirconium, about 0.01 to about 0.3% manganese, up to about 2.5% nickel, and up to about 4% zinc, wherein the aluminum and titanium are present in the composition, as metal oxides, in an elemental weight ratio of Al:Ti in the range of about 8:1 to about 17:1. The ceramic compositions have a resonant frequency, f, in the range of about 2.4 to about 10 GHz, a quality factor, Q, of at least about 4000, a dielectric constant, K, in the range of about 10 to about 15, and a temperature coefficient of resonant frequency, Tf in the range of about −20 ppm to about +20 ppm. Metal oxide powder compositions useful for preparing the dielectric ceramic compositions and a method of making the ceramic compositions are also described.
    • 适合用于电信设备的微波带滤波器的多相金属氧化物陶瓷组合物是金属氧化物的复合材料,其以元素重量计包含约42至约50%的铝,约2.5至约6%的钛,约0.05至约1.5 %铌,约0.04至约1%的钡,约0.03至约0.7%的锆,约0.01至约0.3%的锰,至多约2.5%的镍和至多约4%的锌,其中铝和钛存在于 所述组合物作为金属氧化物以Al:Ti的元素重量比在约8:1至约17:1的范围内。 陶瓷组合物具有在约2.4至约10GHz的范围内的谐振频率f,至少约4000的品质因数Q,介电常数K在约10至约15的范围内,以及 共振频率的温度系数在大约-20ppm到大约+20ppm的范围内。 还描述了可用于制备介电陶瓷组合物的金属氧化物粉末组合物和制备陶瓷组合物的方法。