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:
Aug. 30, 2022
Filed:
Dec. 03, 2018
Tdk Corporation, Tokyo, JP;
Akito Hasegawa, Tokyo, JP;
Hironobu Kumaoka, Tokyo, JP;
Kazuhiro Yoshidome, Tokyo, JP;
Hiroyuki Matsumoto, Tokyo, JP;
Kenji Horino, Tokyo, JP;
Isao Nakahata, Tokyo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
A soft magnetic alloy thin strip which has high saturation magnetic flux density and low coercivity, which enables a core with high space factor and high saturation magnetic flux density. A soft magnetic alloy thin strip including a main component that has a composition formula (FeX1X2))MBPSiCS. In the formula, X1, X2 and M are selected from a specific element group; 0≤a≤0.140, 0.020≤b≤0.200, 0≤c≤0.150, 0≤d≤0.090, 0≤e≤0.030, 0≤f≤0.030, α≥0, β≥0, and 0≤α+β≤0.50; and at least one of a, c and d is larger than 0. The strip has a structure that is composed of an Fe-based nanocrystal; and the surface roughness of a release surface satisfies 0.85≤Ra/Ra≤1.25 (wherein Rais the average of arithmetic mean roughnesses in the central portion, and Rais the average in the edge portion).