Title:
ULTRAFINE CRYSTAL ALLOY RIBBON, FINE CRYSTAL SOFT MAGNETIC ALLOY RIBBON, AND MAGNETIC PARTS USING SAME
Document Type and Number:
WIPO Patent Application WO/2014/038705
Kind Code:
A1
Abstract:
An ultrafine crystal alloy ribbon having a structure expressed by the general formula Fe100-x-y-zAxByXz (A is Cu and/or Au; X is at least one element selected from Si, S, C, P, Al, Ge, Ga, and Be; and x, y, and z are each atomic percentages fulfilling the conditions 0 < x ≤ 5, 8 ≤ y ≤ 22, 0 ≤ z ≤ 10, and x + y + z ≤ 25.), ultrafine crystal grains that have an average grain size no greater than 30 nm having a volume percentage greater than 0 within the noncrystalline parent phase, the ribbon having a dispersed structure in a ratio less than 30 volume percent, and a region of ultrafine crystal grain scarcity, in which the number density of the ultrafine crystal grains is less than 500/µm2, being formed in a region 0.2 mm wide as measured from the side ends of the ribbon.
Inventors:
OHTA MOTOKI (JP)
YOSHIZAWA YOSHIHITO (JP)
YOSHIZAWA YOSHIHITO (JP)
Application Number:
PCT/JP2013/074351
Publication Date:
March 13, 2014
Filing Date:
September 10, 2013
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
C22C38/00; B22D11/06; C21D6/00; C22C45/02; H01F1/14; H01F1/153; H01F1/16; H01F27/24
Domestic Patent References:
| WO2011122589A1 | 2011-10-06 | |||
| WO2013051380A1 | 2013-04-11 | |||
| WO2007032531A1 | 2007-03-22 |
Foreign References:
| JPH08283920A | 1996-10-29 |
Other References:
See also references of EP 2894236A4
Attorney, Agent or Firm:
TAKAISHI Kitsuma (JP)
Kitsuma Takaishi (JP)
Kitsuma Takaishi (JP)
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