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US 2026/0279644 A1Published application
Magnetic core and coil component
AssigneeTDK Corporation
InventorsNobuhiro OKUDA, Hiroyuki MATSUMOTO, Kazuhiro YOSHIDOME
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Abstract
A magnetic core having a high relative permeability is obtained. The magnetic core contains soft magnetic metal powder particles. In a cross section of the magnetic core, a number ratio of soft magnetic metal powder particles having a circularity of less than 0.50 to a total number of soft magnetic metal powder particles having a particle size of 10 μm or more and less than 50 μm is 0.05% or more and 1.50% or less.
Claims16
A magnetic core comprising soft magnetic metal powder particles,
- wherein a number ratio of soft magnetic metal powder particles having a circularity of less than 0.50 to a total number of soft magnetic metal powder particles having a particle size of 10 μm or more and less than 50 μm is 0.05% or more and 1.50% or less in a cross section of the magnetic core, the soft magnetic metal powder particles comprise one or more elements selected from the group consisting of Fe, Co and Ni, and a total content of Fe, Co and Ni in the soft magnetic powder particles is 59.9 at % or more.
Dependencies are inferred from the claim text.