Atom probe characterization of an {alpha}-Fe/Nd{sub 2}Fe{sub 14}B nanocomposite magnet with a remaining amorphous phase
The microstructural features of Nd{sub 8}Fe{sub 76.5}Co{sub 8}B{sub 6}Cu{sub 0.5}Nb{sub 1} nanocomposite magnet have been studied by a three-dimensional atom probe (3DAP) and transmission electron microscopy (TEM). The as-melt-spun microstructure is composed of {alpha}-Fe, Nd{sub 2}Fe{sub 14}B and a large fraction of intergranular amorphous phase. The annealed microstructure with optimum magnetic properties contains the same constituent phases as those in the as-quenched state, but the volume fraction of the Nd{sub 2}Fe{sub 14}B grains is increased by partial crystallization of the remaining amorphous phase. Nb and B are found to be enriched in the remaining amorphous phase. Unlike Fe{sub 3}B/Nd{sub 2}Fe{sub 14}B nanocomposite, Cu additions are not effective in refining the grain size in this system.
- Research Organization:
- National Research Inst. for Metals, Tsukuba (JP)
- OSTI ID:
- 20000758
- Journal Information:
- IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers), Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers) Journal Issue: 5Pt2 Vol. 35; ISSN IEMGAQ; ISSN 0018-9464
- Country of Publication:
- United States
- Language:
- English
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