Title:
COMPOSITE MAGNETIC MATERIAL, METHOD FOR MANUFACTURING SHEET-LIKE ARTICLE, METHOD FOR MANUFACTURING COMPOSITE MAGNETIC MATERIAL
Document Type and Number:
Japanese Patent JP3785350
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a composite magnetic material which has an excellent effect of attenuating noises of 100 to 400 MHz so as to meet and EMC standard and is very thin (e.g. 0.4 mm or below in thickness), and to provide a method for manufacturing the same.
SOLUTION: The composite magnetic material 1 is composed of soft magnetic metal phases 2 and insulating phases 3 interposed between the soft magnetic metal phases 2. At this point, the soft magnetic metal phase 2 is formed by pressure-bonding flat soft magnetic metal powder coated with insulating films. The insulating phase 3 is formed of the insulating film. The space factor of the soft magnetic metal phase 2 to the composite magnetic material 1 can be set at 50% or above. Furthermore, the composite magnetic material 1 can be formed into a sheet shape having a thickness of 5 μm to 0.4 mm.
More Like This:
Inventors:
Katsuhiko Wakayama
Long work
Long work
Application Number:
JP2001345308A
Publication Date:
June 14, 2006
Filing Date:
November 09, 2001
Export Citation:
Assignee:
tdk Corporation
International Classes:
H01F1/00; H01F1/24; H05K9/00; (IPC1-7): H01F1/00; H01F1/24; H05K9/00
Domestic Patent References:
| JP10079302A | ||||
| JP10056292A | ||||
| JP7326508A | ||||
| JP2000243615A | ||||
| JP6132692A | ||||
| JP6252586A | ||||
| JP9027693A |
Attorney, Agent or Firm:
Mitsuru Oba
Previous Patent: SUPPORT FOR LITHOGRAPHIC PRINTING PLATE AND LITHOGRAPHIC PRINTING PLATE MASTER
Next Patent: CONCRETE STRUCTURE AND ITS DESIGN METHOD
Next Patent: CONCRETE STRUCTURE AND ITS DESIGN METHOD