Title:
A manufacturing method of a dust core
Document Type and Number:
Japanese Patent JP6088192
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide soft magnetic alloy powder which is improved in soft magnetic property without performing a complex thermal treatment pattern while suppressing the rise in the temperature of a sample in a step of a thermal treatment, and to provide a powder-compact magnetic core arranged by use of the soft magnetic alloy powder and a manufacturing method of the powder-compact magnetic core.SOLUTION: Soft magnetic alloy powder is expressed by the compositional formula, FeBSiPCCu, provided that a, b, c, x, y and z satisfy the conditions of 79≤a≤86 at%, 5≤b≤13 at%, 0≤c≤8 at%, 1≤x≤10 at%, 0≤y≤5 at%, 0.4≤z≤1.4 at%, and 0.06≤z/x≤1.20. Especially, the soft magnetic alloy powder is made up of grains each prepared to have a crystal phase part located in a center portion of the grain, and an amorphous phase part located in an outer peripheral portion. A powder-compact magnetic core is manufactured by use of the soft magnetic alloy powder.
Inventors:
Miho Chiba
Akira Urata
Yoshi Satake
Hiroyuki Matsumoto
Eisaku Yoshida
Akihiro Makino
Akira Urata
Yoshi Satake
Hiroyuki Matsumoto
Eisaku Yoshida
Akihiro Makino
Application Number:
JP2012223227A
Publication Date:
March 01, 2017
Filing Date:
October 05, 2012
Export Citation:
Assignee:
NEC TOKIN CORPORATION
Tohoku University
Tohoku University
International Classes:
H01F41/02; B22F1/00; B22F3/00; C22C38/00; C22C45/02; H01F1/153; H01F1/22; H01F27/255
Domestic Patent References:
| JP63304603A | ||||
| JP2012136770A | ||||
| JP2010070852A | ||||
| JP2008294411A | ||||
| JP54076469A | ||||
| JP2004349585A | ||||
| JP5001302A |
Attorney, Agent or Firm:
Takuya Yamazaki
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