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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9287026 B1

PDFFull Text
Date of Patent:
Mar. 15, 2016

Filed:

Apr. 18, 2012

Magnetic material and coil component

Applicants:

Hitoshi Matsuura, Tokyo, JP;

Masahiro Hachiya, Tokyo, JP;

Kenji Otake, Tokyo, JP;

Inventors:

Hitoshi Matsuura, Tokyo, JP;

Masahiro Hachiya, Tokyo, JP;

Kenji Otake, Tokyo, JP;

Assignee:

Taiyo Yuden Co., Ltd., Tokyo, JP;

Attorney:

Law Office of Katsuhiro Arai

Primary Examiner:

Carol M Koslow

Int. Cl.
CPC ...
H01F 1/24 (2006.01); H01F 27/255 (2006.01); C22C 33/02 (2006.01); C22C 38/00 (2006.01); B22F 1/02 (2006.01); B22F 9/08 (2006.01); B22F 3/00 (2006.01); B22F 3/26 (2006.01); H01F 1/01 (2006.01); B22F 1/00 (2006.01); C22C 1/04 (2006.01); C22C 38/02 (2006.01); C22C 38/18 (2006.01); H01F 1/26 (2006.01); H01F 1/33 (2006.01); H01F 41/02 (2006.01); H01F 1/22 (2006.01); H01F 1/147 (2006.01); H01F 17/04 (2006.01);
U.S. Cl.
CPC ...
H01F 1/01 (2013.01); B22F 1/0062 (2013.01); B22F 1/0088 (2013.01); B22F 1/02 (2013.01); C22C 1/0458 (2013.01); C22C 38/02 (2013.01); C22C 38/18 (2013.01); H01F 1/26 (2013.01); H01F 1/33 (2013.01); H01F 41/0246 (2013.01); H01F 1/14766 (2013.01); H01F 1/22 (2013.01); H01F 1/24 (2013.01); H01F 17/04 (2013.01);
Abstract

An object is to provide a magnetic material and coil component offering improved magnetic permeability and insulation resistance, while also offering improved high-temperature load, moisture resistance, water absorbency, and other reliability characteristics at the same time. A magnetic material that has multiple metal grains constituted by Fe—Si-M soft magnetic alloy (where M is a metal element that oxidizes more easily than Fe), as well as oxide film constituted by an oxide of the soft magnetic alloy and formed on the surface of the metal grains, wherein the magnetic material has bonding parts where adjacent metal grains are bonded together via the oxide film formed on their surface, as well as bonding parts where metal grains are directly bonded together in areas having no oxide film, and resin material is filled in at least some of the voids generating as a result of accumulation of the metal grains.

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