Amorphous formation and magnetic properties of Nd-Fe-Co-Al alloys by gas flow type levitation process

Shuji Azumo, Katsuhisa Nagayama

研究成果: Article査読

5 被引用数 (Scopus)

抄録

It is reported that Nd-Fe-Co-Al amorphous alloys have high bulk amorphous formation ability and high coercivity by rapid solidification method. We have examined the undercooling solidification, bulk amorphous formation and high coercivity appearance by using containerless process. In this study, we investigated the undercooling, bulk amorphous formation and magnetic properties for Nd-Fe-Co-Al alloys which are levitated and solidified by using the gas jet flow and high cooling type electromagnetic levitation system. Therefore, the high undercooling degree was 66-152 K and the samples formed amorphous phase. The bulk samples, Φ6 mm sphere, solidified at the cooling rate, about 100 K/s. In addition, the coercivity for Nd65Fe10Co 15Al10 sample with bulk amorphous phase, 3.7kOe, was the highest value in all samples. Also, the thermal stability for Nd 65Fe10Co15Al10 sample was carried out by isothermal annealing experiments. The origin of high coercivity may be related to the amorphous phase.

本文言語English
ページ(範囲)2842-2845
ページ数4
ジャーナルMaterials Transactions
47
11
DOI
出版ステータスPublished - 2006 11

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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