MISC

2009年10月

New Excellent Soft Magnetic FeSiBPCu Nanocrystallized Alloys With High B-s of 1.9 T From Nanohetero-Amorphous Phase

IEEE TRANSACTIONS ON MAGNETICS
  • Akihiro Makino
  • ,
  • He Men
  • ,
  • Takeshi Kubota
  • ,
  • Kunio Yubuta
  • ,
  • Akihisa Inoue

45
10
開始ページ
4302
終了ページ
4305
記述言語
英語
掲載種別
DOI
10.1109/TMAG.2009.2023862
出版者・発行元
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

The melt-spun Fe83.3-84.3Si4B8P3-4Cu0.7 (at%) alloys have heterogeneous amorphous structures including a large amount of alpha-Fe clusters with less than 3 nm in size after rapid solidification, due to the unusual effect of the simultaneous addition of the small amounts of P and Cu. A homogeneous nanocrystalline structure composed of alpha-Fe grains with a size of about less than 20 nm can be realized by crystallizing the heteroamorphous alloys. The Fe83.3-84.3Si4B8P3-4Cu0.7 nanocrystalline alloys show significantly high saturation magnetic flux density of 1.88-1.94 T almost comparable to the commercial silicon steel. The Fe83.3-84.3Si4B8P3-4Cu0.7 alloys exhibit excellent magnetic softness; low coercivity of 7-10 A/m, relatively high effective permeability of 16 000-25 000 at 1 kHz due to the simultaneous realization of the uniform nanostructure composed by fine alpha-Fe grains and a small magnetostriction of 2 - 3 x 10(-6). The nanocrystalline alloys also exhibit much smaller W than the silicon steel over the B-m range up to 1.7 T due to significantly higher B-s and excellent magnetic softness. Therefore, the Fe-Si-B-P-Cu alloys have a great advantage for engineering and industry, and, thus, should make a contribution to energy saving and conservation of earth's resources and environment.

Web of Science ® 被引用回数 : 72

リンク情報
DOI
https://doi.org/10.1109/TMAG.2009.2023862
CiNii Articles
http://ci.nii.ac.jp/naid/80020603940
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000270149700230&DestApp=WOS_CPL

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