Dielectric ceramic composition and electronic component

Patent metadata

Field	Value
Publication number	US-10669207-B2
Application number	US-201816136767-A
Country	US
Kind code	B2
Filing date	Sep 20, 2018
Priority date	Sep 26, 2017
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

A dielectric ceramic composition includes: Mg2SiO4 as main component; R-containing, Cu-containing, and B-containing compounds, and Li-containing glass, as sub-component. R is an alkaline earth metal. R-containing compound greater than or equal to 0.2 part by mass and less than or equal to 4.0 parts by mass, contained in terms of oxide, Cu-containing compound of greater than or equal to 0.5 part by mass and less than or equal to 3.0 parts by mass, contained in terms of oxide, and B-containing compound greater than or equal to 0.2 part by mass and less than or equal to 3.0 parts by mass, contained in terms of oxide, to 100 parts by mass of main component. Li-containing glass of greater than or equal to 2 parts by mass and less than or equal to 10 parts by mass contained to total a 100 parts by mass of main component, and sub-component excluding Li-containing glass.

First claim

The invention claimed is:

1. A dielectric ceramic composition, comprising:
Mg 2 SiO 4 as a main component; and
an R-containing compound, a Cu-containing compound, a B-containing compound, and Li-containing glass, as sub-components, wherein:
R is an alkaline earth metal;
greater than or equal to 0.2 part by mass and less than or equal to 4.0 parts by mass of the R-containing compound is contained in terms of RO, greater than or equal to 0.5 part by mass and less than or equal to 3.0 parts by mass of the Cu-containing compound is contained in terms of CuO, and greater than or equal to 0.2 part by mass and less than or equal to 3.0 parts by mass of the B-containing compound is contained in terms of B 2 O 3 , with respect to 100 parts by mass of the main component;
greater than or equal to 2 parts by mass and less than or equal to 10 parts by mass of the Li-containing glass is contained with respect to the total of 100 parts by mass of the main component and the sub-components excluding the Li-containing glass; and
a Zn-containing compound is not substantially contained.

2. The dielectric ceramic composition according to claim 1 , further comprising:
a Mn-containing compound as a sub-component,
wherein greater than or equal to 0.05 part by mass and less than or equal to 1.5 parts by mass of the Mn-containing compound is contained in terms of MnO, with respect to 100 parts by mass of the main component.

3. The dielectric ceramic composition according to claim 1 , further comprising:
a Ti-containing compound as a sub-component,
wherein greater than or equal to 0.3 part by mass and less than or equal to 3.0 parts by mass of the Ti-containing compound is contained in terms of TiO 2 , with respect to 100 parts by mass of the main component.

4. The dielectric ceramic composition according to claim 2 , further comprising:
a Ti-containing compound as a sub-component,
wherein greater than or equal to 0.3 part by mass and less than or equal to 3.0 parts by mass of the Ti-containing compound is contained in terms of TiO 2 , with respect to 100 parts by mass of the main component.

5. The dielectric ceramic composition according to claim 1 , further comprising:
an Al-containing compound as a sub-component,
wherein greater than or equal to 0.3 part by mass and less than or equal to 3.0 parts by mass of the Al-containing compound is contained in terms of Al 2 O 3 , with respect to 100 parts by mass of the main component.

6. The dielectric ceramic composition according to claim 2 , further comprising:
an Al-containing compound as a sub-component,
wherein greater than or equal to 0.3 part by mass and less than or equal to 3.0 parts by mass of the Al-containing compound is contained in terms of Al 2 O 3 , with respect to 100 parts by mass of the main component.

7. The dielectric ceramic composition according to claim 3 , further comprising:
an Al-containing compound as a sub-component,
wherein greater than or equal to 0.3 part by mass and less than or equal to 3.0 parts by mass of the Al-containing compound is contained in terms of Al 2 O 3 , with respect to 100 parts by mass of the main component.

8. The dielectric ceramic composition according to claim 4 , further comprising:
an Al-containing compound as a sub-component,
wherein greater than or equal to 0.3 part by mass and less than or equal to 3.0 parts by mass of the Al-containing compound is contained in terms of Al 2 O 3 , with respect to 100 parts by mass of the main component.

9. The dielectric ceramic composition according to claim 1 , further comprising:
a Zr-containing compound as a sub-component,
wherein greater than or equal to 0.2 part by mass and less than or equal to 3.0 parts by mass of the Zr-containing compound is contained in terms of ZrO 2 , with respect to 100 parts by mass of the main component.

10. The dielectric ceramic composition according to claim 2 , further comprising:
a Zr-containing compound as a sub-component,
wherein greater than or equal to 0.2 part by mass and less than or equal to 3.0 parts by mass of the Zr-containing compound is contained in terms of ZrO 2 , with respect to 100 parts by mass of the main component.

11. The dielectric ceramic composition according to claim 3 , further comprising:
a Zr-containing compound as a sub-component,
wherein greater than or equal to 0.2 part by mass and less than or equal to 3.0 parts by mass of the Zr-containing compound is contained in terms of ZrO 2 , with respect to 100 parts by mass of the main component.

12. The dielectric ceramic composition according to claim 4 , further comprising:
a Zr-containing compound as a sub-component,
wherein greater than or equal to 0.2 part by mass and less than or equal to 3.0 parts by mass of the Zr-containing compound is contained in terms of ZrO 2 , with respect to 100 parts by mass of the main component.

13. The dielectric ceramic composition according to claim 5 , further comprising:
a Zr-containing compound as a sub-component,
wherein greater than or equal to 0.2 part by mass and less than or equal to 3.0 parts by mass of the Zr-containing compound is contained in terms of ZrO 2 , with respect to 100 parts by mass of the main component.

14. The dielectric ceramic composition according to claim 6 , further comprising:
a Zr-containing compound as a sub-component,
wherein greater than or equal to 0.2 part by mass and less than or equal to 3.0 parts by mass of the Zr-containing compound is contained in terms of ZrO 2 , with respect to 100 parts by mass of the main component.

15. The dielectric ceramic composition according to claim 7 , further comprising:
a Zr-containing compound as a sub-component,
wherein greater than or equal to 0.2 part by mass and less than or equal to 3.0 parts by mass of the Zr-containing compound is contained in terms of ZrO 2 , with respect to 100 parts by mass of the main component.

16. The dielectric ceramic composition according to claim 8 , further comprising:
a Zr-containing compound as a sub-component,
wherein greater than or equal to 0.2 part by mass and less than or equal to 3.0 parts by mass of the Zr-containing compound is contained in terms of ZrO 2 , with respect to 100 parts by mass of the main component.

17. A dielectric ceramic composition, comprising:
Mg 2 SiO 4 as a main component; and
an R-containing compound, a Cu-containing compound, a B-containing compound, Li-containing glass, and Ag as sub-components, wherein:
R is an alkaline earth metal;
greater than or equal to 0.2 part by mass and less than or equal to 4.0 parts by mass of the R-containing compound is contained in terms of RO, greater than or equal to 0.5 part by mass and less than or equal to 3.0 parts by mass of the Cu-containing compound is contained in terms of CuO, and greater than or equal to 0.2 part by mass and less than or equal to 3.0 parts by mass of the B-containing compound is contained in terms of B 2 O 3 with respect to 100 parts by mass of the main component;
greater than or equal to 2 parts by mass and less than or equal to 10 parts by mass of the Li-containing glass is contained with respect to the total of 100 parts by mass of the main component and the sub-components excluding the Li-containing glass; and
greater than or equal to 0.05 part by mass and less than or equal to 1.0 part by mass of Ag is contained with respect to the total of 100 parts by mass of the main component and the sub-components excluding the Li-containing glass.

18. The dielectric ceramic composition according to claim 17 , further comprising:
a

Assignees

• Tdk Corp

Inventors

• Fukui Takashi
• Kobuke Hisashi
• Ishimoto Atsushi
• Abe Masanori

Classifications

• C04B2235/3244

  Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof · CPC title

• C04B35/20 Primary

  rich in magnesium oxide {, e.g. forsterite (C04B35/195 takes precedence)} · CPC title

• C04B2235/3409

  Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax · CPC title

• C04B2235/36

  Glass starting materials for making ceramics, e.g. silica glass · CPC title

• C04B2235/96

  Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance · CPC title