Glass ceramic composition and coil electronic component

Patent metadata

Field	Value
Publication number	US-9573837-B2
Application number	US-201615015420-A
Country	US
Kind code	B2
Filing date	Feb 4, 2016
Priority date	Feb 10, 2015
Publication date	Feb 21, 2017
Grant date	Feb 21, 2017

Abstract

A glass ceramic composition of the present invention includes a main component composed of a first glass, a second glass, Al 2 O 3 , and SiO 2 . The first glass is SiO 2 —K 2 O—B 2 O 3 based glass. The second glass is MO—SiO 2 —Al 2 O 3 —B 2 O 3 based glass (“M” is an alkaline-earth metal) and/or CaO—SiO 2 —Al 2 O 3 —ZnO—ZrO 2 —B 2 O 3 based glass. In case that the total amount of the main component is 100 wt %, the main component contains the second glass of 12 to 30 wt %, the first and second glass of 40 to 56 wt % in total, and further Al 2 O 3 of 7 to 18 wt %.

First claim

The invention claimed is:

1. A glass ceramic composition comprising a main component composed of a first glass, a second glass, Al 2 O 3 , and SiO 2 , wherein
the first glass is SiO 2 —K 2 O—B 2 O 3 based glass,
the second glass is MO—SiO 2 —Al 2 O 3 —B 2 O 3 based glass (“M” is an alkaline-earth metal) and/or CaO—SiO 2 —Al 2 O 3 —ZnO—ZrO 2 —B 2 O 3 based glass, and
in case that the total amount of the main component is 100 wt %, the main component contains the second glass of 12 to 30 wt %, the first and second glass of 40 to 56 wt % in total, and further Al 2 O 3 of 7 to 18 wt %.

2. The glass ceramic composition as set forth in claim 1 , further comprising a third glass of 5 wt % or less as an additive with respect to the main component of 100 wt %, wherein
the third glass is SrO—SiO 2 —B 2 O 3 based glass.

3. The glass ceramic composition as set forth in claim 1 , wherein
SiO 2 is quartz and/or quartz glass.

4. The glass ceramic composition as set forth in claim 2 , wherein
SiO 2 is quartz and/or quartz glass.

5. A coil element comprising the glass ceramic composition as set forth in claim 1 .

6. A sintered body composed of the glass ceramic composition as set forth in claim 1 .

7. A coil electronic component comprising ceramic layers composed of the sintered body as set forth in claim 6 .

8. An electronic component comprising ceramic layers and a coil conductor laminated therebetween, wherein
the coil conductor contains Ag and
the ceramic layer is composed of the sintered body as set forth in claim 6 .

9. An interlayer composition for high frequency coils comprising a main component composed of a first glass, a second glass, Al 2 O 3 , and SiO 2 , wherein
the first glass is SiO 2 —K 2 O—B 2 O 3 based glass,
the second glass is MO—SiO 2 —Al 2 O 3 —B 2 O 3 based glass (“M” is an alkaline-earth metal) and/or CaO—SiO 2 —Al 2 O 3 —ZnO—ZrO 2 —B 2 O 3 based glass, and
in case that the total amount of the main component is 100 wt %, the main component contains the second glass of 12 to 30 wt %, the first and second glass of 40 to 56 wt % in total, and further Al 2 O 3 of 7 to 18 wt %.

Assignees

• Tdk Corp

Inventors

• Umemoto Shusaku
• Suzuki Takashi
• Takahashi Masaki
• Sato Hidekazu
• Akita Yukari
• TOBITA Kazuya
• Kondo Shinichi

Classifications

• C03C8/22

  containing two or more distinct frits having different compositions · CPC title

• H01F27/292

  Surface mounted devices · CPC title

• H01F17/0013

  with stacked layers · CPC title

• C03B19/06

  by sintering, {e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction} · CPC title

• C03C14/004

  the non-glass component being in the form of particles or flakes · CPC title