Compositions: ceramic – Ceramic compositions – Titanate – zirconate – stannate – niobate – or tantalate or...
Patent
1995-07-12
1996-10-01
Jones, Deborah
Compositions: ceramic
Ceramic compositions
Titanate, zirconate, stannate, niobate, or tantalate or...
C04B 3549
Patent
active
055610900
ABSTRACT:
An improved dielectric ceramic composition for high frequencies and a method for preparation of the same, capable of being advantageously used for a dielectric resonator, a material of a substrate for an integrated circuit and the like in high frequency regions, which consists of a main component of ZrO.sub.2, TiO.sub.2, and SnO.sub.2 and a sintering aid component of ZnO, NiO, Nb.sub.2 O.sub.5, and Mn(NO.sub.3).sub.2 4H.sub.2. The main component consists of 38 to 58 wt % of ZrO.sub.2, 22 to 43 wt % of TiO.sub.2, and 9 to 26 wt % of SnO.sub.2. And the sintering aid component consists of, with respect to the total amount of the main component, less than 7 wt % of ZnO, less than 10 wt % of NiO, less than 7 wt % of Nb.sub.2 O.sub.5, and less than 4 wt %, of Mn(NO.sub.3).sub.2 4H.sub.2 O, calculated on the basis of the weight ratio of MnO.sub.2.
REFERENCES:
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patent: 4767732 (1988-08-01), Furukawa et al.
patent: 4988650 (1991-01-01), Takagi et al.
patent: 5130281 (1992-07-01), Sano et al.
Kim Yoon H.
Park Yung
Jones Deborah
Korea Institute of Science and Technology
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