US 11,705,259 B2
Soft magnetic metal powder, dust core, and magnetic component
Masahito Koeda, Tokyo (JP); Kazuhiro Yoshidome, Tokyo (JP); and Hiroyuki Matsumoto, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on Sep. 29, 2020, as Appl. No. 17/36,447.
Claims priority of application No. 2019-180943 (JP), filed on Sep. 30, 2019; and application No. 2020-129377 (JP), filed on Jul. 30, 2020.
Prior Publication US 2021/0098164 A1, Apr. 1, 2021
Int. Cl. H01F 3/08 (2006.01); H01F 1/153 (2006.01); H01F 1/24 (2006.01)
CPC H01F 3/08 (2013.01) [H01F 1/15333 (2013.01); H01F 1/24 (2013.01)] 18 Claims
 
1. A soft magnetic metal powder comprising a plurality of soft magnetic metal particles containing iron,
wherein a surface of each of the soft magnetic metal particles is covered with a coating part, and
a maximum height Sz of a surface of the coating part is 10 to 700 nm.