Ceramic composition and electronic component using the ceramic composition

Patent metadata

Field	Value
Publication number	US-11142482-B2
Application number	US-201916512822-A
Country	US
Kind code	B2
Filing date	Jul 16, 2019
Priority date	Jul 24, 2018
Publication date	Oct 12, 2021
Grant date	Oct 12, 2021

Abstract

A ceramic composition in one embodiment contains, relative to 100 parts by mass of diopside crystal powder, 0.3 to 1.5 parts by mass of a Li component in terms of an oxide thereof and 0.1 to 1 part by mass of a B component in terms of an oxide thereof. In this embodiment, the content of the Li component in terms of an oxide thereof is larger than the content of the B component in terms of an oxide thereof. In this embodiment, a total content of the Li component and the B component is 2.25 parts by mass or less in terms of oxides thereof.

First claim

What is claimed is:

1. A ceramic composition comprising:
relative to 100 parts by mass of diopside crystal powder,
0.3 to 1.5 parts by mass of a Li component in terms of an oxide thereof; and
0.1 to 1 part by mass of a B component in terms of an oxide thereof,
wherein the ceramic composition further comprises at least one component selected from a group consisting of a Zn component, a Co component, an Al component, a Zr component, a Bi component, a Ba component, a K component, and a Na component,
wherein a content of the Li component in terms of an oxide thereof is larger than a content of the B component in terms of an oxide thereof,
wherein a total content of the Li component and the B component is 2.25 parts by mass or less in terms of oxides thereof; and
wherein a total content of the Li component, the B-component, and the at least one component is 0.5 to 6 parts by mass in terms of oxides thereof relative to 100 parts by mass of the diopside crystal powder.

2. The ceramic composition according to claim 1 , further comprising:
4 to 19 parts by mass of SrTiO 3 powder relative to 100 parts by mass of the diopside crystal powder.

3. The ceramic composition according to claim 2 , comprising:
6 to 10 parts by mass of the SrTiO 3 powder relative to 100 parts by mass of the diopside crystal powder.

4. The ceramic composition according to claim 1 , further comprising:
a total of 0 to 3 parts by mass of an Ag component and a Cu component in terms of oxides thereof relative to 100 parts by mass of the diopside crystal powder.

5. The ceramic composition according to claim 4 , comprising:
a total of 0 to 0.5 parts by mass of the Ag component and the Cu component in terms of oxides thereof.

6. An electronic component, comprising:
a ceramic layer formed of the ceramic composition according to claim 1 ; and
a conductor layer provided on a surface of and/or in an interior of the ceramic layer and obtained through co-firing with the ceramic composition.

7. The electronic component according to claim 6 , wherein the conductor layer is made of Ag, Cu, or an alloy containing at least one of Ag and Cu.

Assignees

• Taiyo Yuden Kk

Inventors

• Yajima Keiko
• Nakajima Takashi

Classifications

• C04B35/638 Primary

  Removal thereof · CPC title

• C04B2235/5436

  micrometer sized, i.e. from 1 to 100 micron · CPC title

• C04B2235/3217

  Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina · CPC title

• C04B2235/3298

  Bismuth oxides, bismuthates or oxide forming salts thereof, e.g. zinc bismuthate · CPC title

• C04B2235/6025

  Tape casting, e.g. with a doctor blade · CPC title