Title:
MAGNETIC MATERIAL AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2017/164376
Kind Code:
A1
Abstract:
Provided is a new magnetic material with high magnetic stability, as well as a manufacturing method therefor, said magnetic material having a higher saturation magnetization than ferrite-based magnetic materials, and having a higher electrical resistivity than existing metal-based magnetic materials, thus solving problems such as that of eddy current loss. Mn-ferrite nanoparticles obtained through wet synthesis are reduced within hydrogen, and grains are allowed to grow while simultaneously using a phase separation phenomenon due to a disproportionation reaction to produce a magnetic material powder in which an α-(Fe, Mn) phase and a Mn-enriched phase are nano-dispersed. This powder is then sintered to produce a solid magnetic material.
Inventors:
IMAOKA NOBUYOSHI (JP)
OZAKI KIMIHIRO (JP)
OZAKI KIMIHIRO (JP)
Application Number:
PCT/JP2017/012035
Publication Date:
September 28, 2017
Filing Date:
March 24, 2017
Export Citation:
Assignee:
NAT INST ADVANCED IND SCIENCE & TECH (JP)
International Classes:
H01F1/147; B22F1/00; B22F1/08; B22F3/24; C22C22/00; C22C33/02; C22C38/00; C22C38/04; H01F1/20; H01F1/22; H01F1/33; H01F1/34
Domestic Patent References:
| WO2009057742A1 | 2009-05-07 | |||
| WO2003015109A1 | 2003-02-20 |
Foreign References:
| JP2013065844A | 2013-04-11 | |||
| JP2014060183A | 2014-04-03 |
Other References:
S. JIN ET AL.: "HIGH-REMANENCE SQUARE-LOOP Fe-Ni AND Fe-Mn MAGNETIC ALLOYS", IEEE TRANSACTION ON MAGNETICS, vol. MAG-16, no. 5, 1 September 1980 (1980-09-01), pages 1062 - 1064, XP002039671, DOI: doi:10.1109/TMAG.1980.1060677
S. SUGIMOTO ET AL.: "GHz microwave absorption of a fine a-Fe structure produced by the disproportionation of Sm2Fe17 in hydrogen", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 330 -332, 17 January 2002 (2002-01-17), pages 301 - 306, XP004313279, DOI: doi:10.1016/S0925-8388(01)01504-3
G. HERZER, IEEE TRANSACTIONS ON MAGNETICS, vol. 26, no. 5, 1990, pages 1397 - 1402
Y. ZHANG; P. SHARMA; A. MAKINO, AIP ADVANCES, vol. 3, no. 6, 2013, pages 062118
N. IMAOKA; Y. KOYAMA; T. NAKAO; S. NAKAOKA; T. YAMAGUCHI; E. KAKIMOTO; M. TADA; T. NAKAGAWA; M. ABE, J. APPL. PHYS., vol. 103, no. 7, 2008, pages 07E129
MAGNETICS SOCIETY OF JAPAN, vol. 22, no. 9, 1998, pages 1225
KIYOSHI TERAYAMA; TAKAYOSHI ISHIGURO, NETSU SOKUTEI, vol. 18, no. 3, 1991, pages 164 - 169
T. HASHIZUME; K. TARAYAMA; T. SHIMAZAKI; H. ITOH; Y. OKUNO, J., THERMAL ANALYSIS CALORIMETRY, vol. 69, 2002, pages 1045 - 1050
See also references of EP 3435387A4
S. SUGIMOTO ET AL.: "GHz microwave absorption of a fine a-Fe structure produced by the disproportionation of Sm2Fe17 in hydrogen", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 330 -332, 17 January 2002 (2002-01-17), pages 301 - 306, XP004313279, DOI: doi:10.1016/S0925-8388(01)01504-3
G. HERZER, IEEE TRANSACTIONS ON MAGNETICS, vol. 26, no. 5, 1990, pages 1397 - 1402
Y. ZHANG; P. SHARMA; A. MAKINO, AIP ADVANCES, vol. 3, no. 6, 2013, pages 062118
N. IMAOKA; Y. KOYAMA; T. NAKAO; S. NAKAOKA; T. YAMAGUCHI; E. KAKIMOTO; M. TADA; T. NAKAGAWA; M. ABE, J. APPL. PHYS., vol. 103, no. 7, 2008, pages 07E129
MAGNETICS SOCIETY OF JAPAN, vol. 22, no. 9, 1998, pages 1225
KIYOSHI TERAYAMA; TAKAYOSHI ISHIGURO, NETSU SOKUTEI, vol. 18, no. 3, 1991, pages 164 - 169
T. HASHIZUME; K. TARAYAMA; T. SHIMAZAKI; H. ITOH; Y. OKUNO, J., THERMAL ANALYSIS CALORIMETRY, vol. 69, 2002, pages 1045 - 1050
See also references of EP 3435387A4
Attorney, Agent or Firm:
ASAMURA PATENT OFFICE, P.C. (JP)
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