Title:
RARE EARTH-TRANSITION METAL SYSTEM FERROMAGNETIC ALLOY
Document Type and Number:
WIPO Patent Application WO/2018/123988
Kind Code:
A1
Abstract:
Provided is a rare earth-transition metal system ferromagnetic alloy which has improved magnetic characteristics and improved thermal stability. The present invention proposes a rare earth-transition metal system ferromagnetic alloy which is characterized by having a composition represented by formula (1).
R11-xR2x(Fe1-yCoy)w-zTiz (1)
In formula (1), R1 comprises at least Y, and may additionally comprise Gd; R2 comprises at least Sm and may additionally comprise at least one rare earth element selected from the group consisting of La, Ce, Nd and Pr; and x, y, z and w are numbers that respectively satisfy 0 < x < 1.0, 0 ≤ y ≤ 0.4, 11 ≤ w ≤ 12.5, 1/3 ≤ z ≤ 0.7 and x ≤ 6z - 2.)
Inventors:
SUZUKI HIROYUKI (JP)
NISHIUCHI TAKESHI (JP)
NISHIUCHI TAKESHI (JP)
Application Number:
PCT/JP2017/046476
Publication Date:
July 05, 2018
Filing Date:
December 25, 2017
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
H01F1/055; C22C38/00; B22F1/00; C21D6/00; C22C33/02
Domestic Patent References:
| WO2016162990A1 | 2016-10-13 |
Foreign References:
| JP2015156436A | 2015-08-27 | |||
| JP2014047366A | 2014-03-17 | |||
| JPH02175830A | 1990-07-09 |
Attorney, Agent or Firm:
SEIRYO I.P.C. (JP)
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