Title:
NANOCRYSTALLINE ALLOY THIN STRIP AND MAGNETIC SHEET
Document Type and Number:
WIPO Patent Application WO/2023/190886
Kind Code:
A1
Abstract:
The present invention provides a nanocrystalline alloy thin strip which has excellent magnetic characteristics including high saturation magnetic flux density and high magnetic permeability. This nanocrystalline alloy thin strip is represented by composition formula (Fe1-xAx)aSibBcCudMe, wherein A represents at least one of Ni and Co, M represents at least one element that is selected from among Nb, Mo, V, Zr, Hf and W, and a, b, c, d, e and x satisfy, in atom%, 75.0 ≤ a ≤ 81.0, 9.0 ≤ b ≤ 17.5, 5.0 ≤ c ≤ 10.0, 0.02 ≤ d ≤ 1.5, 0.1 ≤ e ≤ 3.5 and 0 ≤ x ≤ 0.1; αFe crystal phases having an average crystal grain size of 50 nm or less accounts for 40% or more in terms of volume fraction; the saturation magnetic flux density is 1.36 T or more; the ratio Br/B8000 of the residual magnetic flux density Br to the magnetic flux density B8000 at a magnetic field of 8,000 A/m is 0.20 or more; and the maximum magnetic permeability is 4,000 or more.
Inventors:
OGAWA YUICHI (JP)
TOYONAGA KOTOBA (JP)
TOYONAGA KOTOBA (JP)
Application Number:
PCT/JP2023/013211
Publication Date:
October 05, 2023
Filing Date:
March 30, 2023
Export Citation:
Assignee:
PROTERIAL LTD (JP)
International Classes:
H01F1/153; C21D6/00; C22C38/00; C22C45/02; H01F3/04
Domestic Patent References:
| WO2007032531A1 | 2007-03-22 | |||
| WO2020235643A1 | 2020-11-26 |
Foreign References:
| JP2016094651A | 2016-05-26 | |||
| JP2021105212A | 2021-07-26 |
Attorney, Agent or Firm:
NAGOYA INTERNATIONAL IP FIRM (JP)
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