Production of dielectric ceramic material powder

Details Production of dielectric ceramic material powder Production of dielectric ceramic material powder

1995-10-03

1996-09-10

Brunsman, David

Compositions: ceramic

Ceramic compositions

Titanate, zirconate, stannate, niobate, or tantalate or...

501139, C04B 3549

Patent

active

055545718

ABSTRACT:
Powder of dielectric ceramic materials is produced by preparing a main component Ba(Ti.sub.1-x-y Zr.sub.x Hf.sub.y)O.sub.3 allowing barium hydroxide, at least one titanium compound, at least one zirconium compound and at least one hafnium compound to react with one another by condensation by catalytic actions of a base selected from the group consisting of alkali and amines; preparing a complex hydroxide of at least one rare earth element and manganese by allowing at least one rare earth element compound and a manganese compound to react with a base selected from the group consisting of alkali and amines in an aqueous solution; preparing at least one carbonate of calcium and magnesium by allowing at least one compound of calcium compounds and magnesium compounds to react with carbonate ions in an aqueous solution; mixing all the precipitates, and drying and thermally treating the resultant mixture.

REFERENCES:
patent: 4643984 (1987-02-01), Abe et al.
patent: 5017534 (1991-05-01), Chaput et al.
patent: 5296425 (1994-03-01), Chazoro et al.

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