Non-reducing dielectric ceramic composition

Details Non-reducing dielectric ceramic composition Non-reducing dielectric ceramic composition

1989-07-27

1990-09-25

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

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

501134, 501135, C04B 3546

Patent

active

049593331

ABSTRACT:
A non-reducing dielectric ceramic composition consists essentially of a basic composition expressed by the general formula: xPb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3 --yPb(Zn.sub.1/3 Nb.sub.2/3)O.sub.3 --zPbTiO.sub.3 where x, y and z are percentages by weight of the respective component and take values within the following respective ranges 98.5.ltoreq.x.ltoreq.59.5, 1.0.ltoreq.y.ltoreq.40.0, 0.5.ltoreq.z.ltoreq.10.0,
and an anti-reducing agent incorporated therein and expressed by the general formula: aLi.sub.2 O--bRO--cB.sub.2 O.sub.3 +(1--a--b--c)SiO.sub.2 where R is at least one element selected from the group consisting of Mg, Ca, Sr and Ba, a, b, and c are molar ratios of the respective component and take values within the following respective ranges: 0.ltoreq.a.ltoreq.0.2, 0.1.ltoreq.b.ltoreq.0.55, 0.ltoreq.c.ltoreq.0.4.

REFERENCES:
patent: 4339544 (1982-07-01), Sakabe et al.
patent: 4700265 (1987-10-01), Kishi et al.
patent: 4723193 (1988-02-01), Chazono et al.
patent: 4753905 (1988-06-01), Nishioka et al.
patent: 4809130 (1989-02-01), Chazono et al.
patent: 4809131 (1989-02-01), Chazono et al.

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