Compositions: ceramic – Ceramic compositions – Titanate – zirconate – stannate – niobate – or tantalate or...
Patent
1992-01-09
1993-08-03
Bell, Mark L.
Compositions: ceramic
Ceramic compositions
Titanate, zirconate, stannate, niobate, or tantalate or...
501134, 501135, 501136, 501138, 501139, 501152, 252520, 252521, 423263, C04B 3546
Patent
active
052328805
ABSTRACT:
A nonreducible dielectric ceramic composition of a system, (A.sub.1-x R.sub.x).sub.y BO.sub.3, is prepared by preparing a slurry containing at least one compound selected from the group consisting of carbonates and hydroxides of Ba, Sr, Ca and Mg, at least one compound selected from the group consisting of carbonates and hydroxides of rare earth elements R, and at least one compound selected from the group consisting of oxides, carbonates and hydroxides of Ti, Zr and Sn; filtering the resulting slurry; washing the filter cake with water and calcining the resulting washed cake.
REFERENCES:
patent: 3997479 (1976-12-01), Shimojo et al.
patent: 4535064 (1985-08-01), Yoneda
patent: 4537865 (1985-08-01), Okabe et al.
patent: 4677083 (1987-06-01), Uedaira et al.
patent: 4987107 (1991-01-01), Narumi et al.
Kohno Yoshiaki
Kojima Shozo
Nakaya Syunsuke
Wada Nobuyuki
Bell Mark L.
Marcheschi Michael A.
Murata Manufacturing Co. Ltd.
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