Title:
初期超微結晶合金、ナノ結晶軟磁性合金及びその製造方法、並びにナノ結晶軟磁性合金からなる磁性部品
Document Type and Number:
Japanese Patent JP5720674
Kind Code:
B2
Abstract:
A primary ultrafine-crystalline alloy having a composition represented by the general formula: Fe 100-x-y-z A x B y X z , wherein A is Cu and/or Au, X is at least one element selected from the group consisting of Si, S, C, P, Al, Ge, Ga and Be, and x, y and z are numbers (by atomic %) meeting the conditions of 0 < x ¤ 5, 10 ¤ y ¤ 22, 0 ¤ z ¤ 10, and x + y + z ¤ 25, and a structure in which 5-30% by volume of primary ultrafine crystal grains having an average particle size of 30 nm or less are dispersed in an amorphous matrix; its differential scanning calorimetry (DSC) curve having a first exothermic peak and a second exothermic peak lower than the first exothermic peak between a crystallization initiation temperature T X1 and a compound precipitation temperature T X3 ; and a ratio of the heat quantity of the second exothermic peak to the total heat quantity of the first and second exothermic peaks being 3% or less.
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Inventors:
Motoki Ota
Katsuhito Yoshizawa
Taku Miyamoto
Toshio Mihara
Katsuhito Yoshizawa
Taku Miyamoto
Toshio Mihara
Application Number:
JP2012508327A
Publication Date:
May 20, 2015
Filing Date:
March 28, 2011
Export Citation:
Assignee:
Hitachi Metals Co., Ltd.
International Classes:
C22C38/00; B22D11/06; C21D6/00; C22C45/02; H01F1/153
Domestic Patent References:
| JP2001252749A | 2001-09-18 |
Foreign References:
| WO2007032531A1 | 2007-03-22 | |||
| WO2008114605A1 | 2008-09-25 |
Attorney, Agent or Firm:
Takaishi Tachibana