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US 12,500,017 B2Granted
Soft magnetic alloy, dust core, and magnetic device
AssigneeTDK Corporation
InventorsAkito Hasegawa, Satoko Mori, Kazuhiro Yoshidome
Life of this patent
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Abstract
A soft magnetic alloy includes a main body and a surface layer. The main body has a soft magnetic alloy composition including Fe and Co. The surface layer is located on a surface side of the main body. A ratio of Co concentration to a sum of Co concentration and Fe concentration in the surface layer is Co/(Fe+Co). A distribution of Co/(Fe+Co) in a thickness direction of the surface layer includes a local minimum point and one or more local maximum points.
Claims8
A soft magnetic alloy comprising:
- a main body having a soft magnetic alloy composition including Fe and Co;
- and
- a surface layer located on a surface side of the main body,
- wherein
- a ratio of Co concentration to a sum of Co concentration and Fe concentration in the surface layer is Co/(Fe+Co), and
- a distribution of Co/(Fe+Co) in a thickness direction of the surface layer includes a local minimum point and one or more local maximum points.
3 more elements
Dependencies are inferred from the claim text.