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.:
Date of Patent:
Apr. 25, 2017
Filed:
Dec. 19, 2014
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C 38/12 (2006.01); H01F 1/147 (2006.01); C22C 38/00 (2006.01); H01F 1/33 (2006.01); C22C 45/00 (2006.01); B22F 1/02 (2006.01); C22C 33/02 (2006.01);
U.S. Cl.
CPC ...
C22C 38/12 (2013.01); B22F 1/02 (2013.01); C22C 33/0264 (2013.01); C22C 38/00 (2013.01); C22C 45/00 (2013.01); H01F 1/33 (2013.01);
Abstract
The present invention provides a soft magnetic powder core with a high electrical resistivity and a high strength. The soft magnetic powder core of the present invention is characterized in that in the soft magnetic powder core containing soft magnetic metal particles with Fe as the main component, the powder core has the structure in which oxide portions are present among soft magnetic metal particles, and the oxide portions are composed of oxides containing V, B and Fe. Further, the amount of B contained in the oxide portions of the powder core is 0.5 or more times and 5.0 or less times of the amount of V in terms of mass ratio.