Synthesis, microstructure and magnetic properties of low Nd content Fe 90Nd 5B 3.5M 1.5 (M = Hf, Ti and Ta) alloys

Zeqiang Zhang, Parmanand Sharma, Kunio Yubuta, Akihiro Makino

研究成果: Contribution to journalArticle査読

6 被引用数 (Scopus)

抄録

We have investigated the effects of Hf, Ti and Ta addition on crystallization behavior, microstructure and magnetic properties of melt-spun Fe 90Nd 5B 3.5M 1.5 (M Hf, Ti and Ta) alloy ribbons. Optimization of processing conditions lead to the development of nano-composite magnets, made from high B s soft magnetic bcc α-Fe (grain size ∼20 nm) and tetragonal Nd 2Fe 14B (grain size ∼18 nm) hard magnetic phases. Hf is most effective in restraining the growth of α-Fe and Nd 2Fe 14B phases during annealing. The Fe 90Nd 5B 3.5Hf 1.5 ribbon annealed at 1003 K for 600 s exhibits very high maximum energy product (BH) max ∼127 kJ/m 3 and reduced remanence ∼1.34 T. Strong exchange coupling among the nano-sized soft and hard magnetic phases is shown to be responsible for the excellent magnetic properties. Among low Nd-containing NdFeB nano-composite magnets, the present alloy seems to have highest (BH) max.

本文言語英語
論文番号07B501
ジャーナルJournal of Applied Physics
111
7
DOI
出版ステータス出版済み - 4 1 2012
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

フィンガープリント

「Synthesis, microstructure and magnetic properties of low Nd content Fe <sub>90</sub>Nd <sub>5</sub>B <sub>3.5</sub>M <sub>1.5</sub> (M = Hf, Ti and Ta) alloys」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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