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:
Mar. 10, 2020
Filed:
Sep. 29, 2015
Sanyo Special Steel Co., Ltd., Himeji-shi, JP;
Fumihiro Maezawa, Himeji, JP;
Toshiyuki Sawada, Himeji, JP;
Sanyo Special Steel Co., Ltd., Hyogo, JP;
Abstract
In accordance with the present invention, there are provided: a soft magnetic flattened powder having an average particle diameter, excellent sheet moldability, and a high magnetic permeability; and a method for producing the soft magnetic flattened powder. The soft magnetic flattened powder according to the present invention includes an Fe—Si—Al-based alloy, an average particle diameter Dbeing 30 to less than 50 μm; a coercive force Hc measured by applying a magnetic field in the longitudinal direction of the flattened powder being 176 A/m or less; the ratio of a tap density to a true density being 0.18 or less; a specific surface area BET value being 0.6 m/g or more; the amount of contained oxygen being 0.6 mass % or less; and the BET value and oxygen value of the soft magnetic powder satisfying expression (1): [oxygen value/BET value≤0.50 mg·g/m(excluding zero)].