Ceramic Material, Sintered Ceramic and Component Made Therefrom, Production Method and Use of the Ceramic
AssigneeEpcos AG
InventorsPavol Dudesek, Christian Hoffmann, Matjaz Valant, Danilo Suvorov
Life of this patent
Estimating the term…
Abstract
A ceramic mixed system is proposed that includes a two-phase mixture of pure components A and B, wherein phase A is based on the cubic to tetragonal modification of Bi3NbO7 and phase B is based on a monoclinic pyrochlore modification of Bi2(Zn2/3Nb4/3)O7. The electrical properties of ceramics produced therefrom make the material suitable for components having a multilayer structure in which capacitors and inductors are integrated and which can be used in data processing or signal processing.
Claims22
A ceramic material, comprising:
- a two-phase mixture xA+(1−x)B,
- wherein 0≦x≦1,
- wherein phase A is based on a cubic to tetragonal modification of Bi3NbO7,
- wherein phase B is based on a monoclinic pyrochlore modification of Bi2(Zn2/3Nb4/3)O7, and
- wherein the two phases can be varied such that Bi, Zn and Nb in the entire material are each replaced up to a proportion of 30 mol % by other metals, but Nb can be replaced up to 100% by Ta.
An electrical component comprising:
- a multilayer structure comprising a plurality of ceramic layers arranged alternately with structured metallization levels and sintered into a monolithic stack, each of the ceramic layers comprising a two-phase mixture xA+(1−x)B, wherein 0<x<1, wherein phase A is based on a cubic to tetragonal modification of Bi3NbO7, wherein phase B is based on a monoclinic pyrochlore modification of Bi2(Zn2/3Nb4/3)O7, and wherein the two phases can be varied such that Bi, Zn and Nb in the entire material are each replaced up to a proportion of 30 mol % by other metals, but Nb can be replaced up to 100% by Ta;
- a plurality of passive components formed in the multilayer structure;
- and
- a plurality of through connections, wherein the structured metallization levels are connected to one another by means of the through connections thereby interconnecting the passive components.
A method for producing a ceramic material, the method comprising:
- producing pure phases A and B separately from one another, phase A being based on a cubic to tetragonal modification of Bi3NbO7 and phase B being based on a monoclinic pyrochlore modification of Bi2(Zn2/3Nb4/3)O7,
- grinding each of the pure phases to a powder;
- and
- mixing powders of the two pure phases in a predetermined ratio to form a two-phase mixture xA+(1−x)B, wherein 0<x<1, wherein the two phases can be varied such that Bi, Zn and Nb in the entire material are each replaced up to a proportion of 30 mol % by other metals, but Nb can be replaced up to 100% by Ta.
Dependencies are inferred from the claim text.