Non-reduction agent for dielectric ceramics

Details Non-reduction agent for dielectric ceramics Non-reduction agent for dielectric ceramics

1989-08-18

1992-01-21

Kyle, Deborah L.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

501134, 361321, H01G 412

Patent

active

050825933

ABSTRACT:
A non-reduction agent for dielectric ceramics is composed of a(MnO+RO) and (1-a) (BO.sub.3/2 +SiO.sub.2), or of b(LiO.sub.1/2 +RO) and (1-b) (BO.sub.3/2 +SiO.sub.2). Here, R is at least one kind selected from among Mg, Ca, Sr and Ba. In these compositions, a is within a range of 0.01.ltoreq.a.ltoreq.0.90 (Mol ratio), and b is within a range of 0.01.ltoreq.b.ltoreq.0.80 (Mol ratio). These non-reduction agents for dielectric ceramics are added to dielectric ceramic materials containing lead oxide, for example, and used as materials for capacitors. These dielectric ceramics become hard to be reduced even when fired in reducing atmospheres.

REFERENCES:
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patent: 3600652 (1971-08-01), Riley
patent: 4626393 (1986-12-01), Wada et al.
patent: 4700265 (1987-10-01), Kishi et al.
patent: 4723193 (1988-02-01), Chazono et al.
patent: 4809131 (1989-02-01), Chazono et al.
patent: 4927711 (1990-05-01), Francis et al.

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