Wang Zuocheng, Zhang Maocai, Qiao Yi, Li Fobiao, Zhou Shouzeng, Wang Run. (NdDy)2(FeNb)14B/α-Fe Nanocomposite Permanent Alloys[J]. Chinese Journal of Engineering, 1997, 19(1): 75-78. DOI: 10.13374/j.issn1001-053x.1997.01.015
Citation: Wang Zuocheng, Zhang Maocai, Qiao Yi, Li Fobiao, Zhou Shouzeng, Wang Run. (NdDy)2(FeNb)14B/α-Fe Nanocomposite Permanent Alloys[J]. Chinese Journal of Engineering, 1997, 19(1): 75-78. DOI: 10.13374/j.issn1001-053x.1997.01.015
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(NdDy)2(FeNb)14B/α-Fe Nanocomposite Permanent Alloys

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  • High coercivity, high remanence, and high energy product (NdDy)2(FeNb)14B/α-Fe nanocrystalline alloys are prepared by melt spining and subsequent annealing. The best properties of remanence (Br), coercivity (Hci) and maximum energy product ((BH)max) are 1.02 T, 702 kA/m and 134 kJ/m3, respectively. The microstructure of the two phase nanocomposite consists of hard magnetic (NdDy)2(FeNb)14B and soft magnetic α-Fe with an average size of 30 nm. These small dimensions allow effective exchange coupling between hard and soft magnetic grains and result in the simultaneous enhancement of Br,Hci and (BH)max.
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