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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 11739403 B1

PDFFull Text
Date of Patent:
Aug. 29, 2023

Filed:

Mar. 25, 2020

Soft magnetic metal powder and magnetic component

Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Satoko Mori, Tokyo, JP;

Kazuhiro Yoshidome, Tokyo, JP;

Hiroyuki Matsumoto, Tokyo, JP;

Assignee:

TDK CORPORATION, Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Kevin E Yoon

Assistant Examiner:

Austin Pollock

Int. Cl.
CPC ...
C22C 38/16 (2006.01); H01F 1/147 (2006.01); B22F 9/08 (2006.01); C22C 38/12 (2006.01); C22C 38/00 (2006.01); H01F 1/153 (2006.01); C22C 38/02 (2006.01); H01F 1/33 (2006.01); H01F 1/36 (2006.01); B22F 1/16 (2022.01); H01F 1/20 (2006.01); H01F 1/24 (2006.01); B22F 1/08 (2022.01);
U.S. Cl.
CPC ...
C22C 38/16 (2013.01); B22F 1/08 (2022.01); B22F 1/16 (2022.01); B22F 9/082 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/12 (2013.01); H01F 1/14766 (2013.01); H01F 1/15308 (2013.01); H01F 1/15333 (2013.01); H01F 1/15341 (2013.01); H01F 1/20 (2013.01); H01F 1/24 (2013.01); H01F 1/33 (2013.01); H01F 1/36 (2013.01); B22F 2301/35 (2013.01); C22C 2200/02 (2013.01); C22C 2200/04 (2013.01); C22C 2202/02 (2013.01);
Abstract

A soft magnetic metal powder that has low coercivity Hcj and high saturation magnetic flux density Bs, and has high powder resistivity and high insulating performance is obtained. The soft magnetic metal powder is soft magnetic metal powder containing Fe. The soft magnetic metal powder has particles each including a soft magnetic metal portion and a coating portion coating the soft magnetic metal portion. The coating portion includes a first coating portion and a second coating portion. The first coating portion is closer to the soft magnetic metal portion than the second coating portion. The first coating portion and the second coating portion have oxides containing at least one element selected from Si, Fe, and B as a main component. The first coating portion includes amorphous material, the second coating portion includes crystals, and the second coating portion has a higher crystal content ratio than the first coating portion.

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