Title:
Ｆｅ基軟磁性合金薄帯およびそれを用いた磁心
Document Type and Number:
Japanese Patent JP6669082
Kind Code:
B2
Abstract:
Conventional Fe-based soft magnetic alloy ribbons each containing Co and Ni have a problem that magnetic anisotropy that is neatly arranged in one direction cannot be induced easily even by a magnetic field annealing treatment and, therefore, a wound magnetic cores, a problem that a residual magnetic flux density Br is high, a problem that the hysteresis of the B-H curve becomes large (coercivity Hc becomes large), a problem that the change in incremental permeability relative to superimposed magnetic field becomes large, and others. In order to solve the problems, provided is an Fe-based soft magnetic alloy ribbon including a Cu-concentrated region present directly below a surface of the ribbon, and a Co-concentrated region present directly below the Cu-concentrated region. Also provided is a magnetic core including the Fe-based soft magnetic alloy ribbon.
Inventors:
Katsuhito Yoshizawa
Application Number:
JP2016566040A
Publication Date:
March 18, 2020
Filing Date:
November 19, 2015
Export Citation:
Assignee:
Hitachi Metals Co., Ltd.
International Classes:
C22C38/00; C22C45/02; H01F1/153; H01F1/16
Domestic Patent References:
| JP2009263775A | ||||
| JP2010229466A | ||||
| JP2008231462A | ||||
| JP2009501273A | ||||
| JP2006525655A | ||||
| JP2000277357A |
Foreign References:
| WO2006064920A1 |
Attorney, Agent or Firm:
Shinei Patent Office