Title:
SOFT MAGNETIC POWDER AND MAGNETIC SUBSTANCE CORE
Document Type and Number:
Japanese Patent JP2022152452
Kind Code:
A
Abstract:
To provide soft magnetic powder used for the production of a magnetic substance core having a high relative magnetic permeability and high DC superposition properties.SOLUTION: Soft magnetic powder comprises Fe and Co. The total content of Fe and Co with respect to the whole of the soft magnetic powder is 90 mass% or more. The content of Fe with respect to the total content of Fe and Co is 30 or more to 95 or less mass%. The average particle diameter of the soft magnetic powder is 0.10 μm or more to 5.0 μm or less. An oxygen content in the surface of the soft magnetic powder is 0.010 g/m2 or less. The true density of the soft magnetic powder with respect to the theoretical density of the soft magnetic powder is 90 or more to 99% or less.SELECTED DRAWING: Figure 1
Inventors:
OKUDA SANEHIRO
MATSUMOTO HIROYUKI
YOSHITOME KAZUHIRO
MATSUMOTO HIROYUKI
YOSHITOME KAZUHIRO
Application Number:
JP2021055232A
Publication Date:
October 12, 2022
Filing Date:
March 29, 2021
Export Citation:
Assignee:
TDK CORP
International Classes:
B22F1/00; C22C19/07; C22C38/00; C22C45/02; H01F1/153; H01F27/255
Attorney, Agent or Firm:
Maeda Suzuki International Patent Attorneys Corporation