Magnetic properties of new Nd-Fe-B nanocrystalline with {alpha}-Fe as main phase
- Korea Research Inst. of Standards and Science, Taejon (Korea, Republic of)
- Chungnam National Univ., Taejon (Korea, Republic of). Dept. of Metallurgical Engineering
The {alpha}-Fe based Nd-Fe-B magnet with low Nd content has been investigated to develop a new type of rare earth magnet. The amorphous Nd{sub 4}Fe{sub 85.5}B{sub 10.5} alloy prepared by a rapid quenching technique was crystallized to form only two phases: {alpha}-Fe as the main phase, and Nd{sub 2}Fe{sub 14}B as the secondary phase. The coercivity and remanence of the studied alloy were 95.5 kA/m and 1.2 T, respectively. The additions of Mo and Cu to Nd{sub 4}Fe{sub 85.5}B{sub 10.5} alloy reduced the mean grain size and increased the coercivity up to 207 kA/m. Furthermore, the substitution of 8 at% Co for Fe in Nd{sub 4}Fe{sub 82}B{sub 10}Mo{sub 3}Cu{sub 1} improved the coercivity, remanence, and Curie point. The coercivity, remanence, and energy product of the Nd{sub 4}Fe{sub 74}Co{sub 8}B{sub 10}Mo{sub 3}Cu{sub 1} alloy were 219 kA/m, 1.4 T, and 103.5 kJ/m{sup 3}, respectively.
- OSTI ID:
- 253672
- Journal Information:
- IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 3Pt2 Vol. 32; ISSN IEMGAQ; ISSN 0018-9464
- Country of Publication:
- United States
- Language:
- English
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