Hierarchical micro/nanoscale NdFe^sub 11^Co oxide and alloy materials synthesized by polyol mediated methods with heat treatment

We demonstrated an effective approach for making NdFe11Co alloy. We used a polyol method with ethylene glycol (EG), polyvinylpyrrolidone (PVP), NaBH4, FeCl3 (and/or FeCl2), NdCl3, and NaOH for Fe oxide with Nd element according to heat treatment. To obtain NdFe11Co alloy products, dried oxide produc...

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Veröffentlicht in:Materials letters 2018-02, Vol.212, p.202
Hauptverfasser: Long, Nguyen Viet, Yang, Yong, Thi, Cao Minh, Phuc, Le Hong, Tuyen, Vu Phi, Nogami, Masayuki
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Sprache:eng
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Zusammenfassung:We demonstrated an effective approach for making NdFe11Co alloy. We used a polyol method with ethylene glycol (EG), polyvinylpyrrolidone (PVP), NaBH4, FeCl3 (and/or FeCl2), NdCl3, and NaOH for Fe oxide with Nd element according to heat treatment. To obtain NdFe11Co alloy products, dried oxide products were heated for solidification, and at 900 °C in Ar gas with CaH2. The weight ratio of oxide/CaH2 is 1:1, and NdFe11Co particles are formed by annealing at 900 °C for 1 h. The crystal structure of NdFe11Co was identified with the main 2-17 phase and the rich-CoFe phase inside its crystal with grain and grain boundary.
ISSN:0167-577X
1873-4979