Dielectric ceramic composition

Details Dielectric ceramic composition Dielectric ceramic composition

1987-05-20

1988-01-26

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

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

501135, 501136, 501153, C04B 3546, C04B 3510

Patent

active

047216921

ABSTRACT:
A dielectric ceramic composition consists essentially of Al.sub.2 O.sub.3 and additives composed of TiO.sub.2, MnO.sub.2 and at least one member selected from the group consisting of BaZrO.sub.3, CaTiO.sub.3 and SrTiO.sub.3, the contents of the additives per 100 parts by weight of Al.sub.2 O.sub.3 being 0.5 to 10.0 parts by weight for TiO.sub.2, 0.5 to 6.0 parts by weight for MnO.sub.2 and not more than 20 parts by weight for at least one member selected from the group consisting for BaZrO.sub.3, CaTiO.sub.3 and SrTiO.sub.3. The dielectric ceramic composition may further contain at least one oxide selected from the group consisting of Co.sub.2 O.sub.3, Fe.sub.2 O.sub.3, NiO, Cr.sub.2 O.sub.3 and CuO in an amount of not more than 5 parts by weight per 100 parts by weight of Al.sub.2 O.sub.3.

REFERENCES:
patent: 4614725 (1986-09-01), Ando et al.

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