Magnetic properties of high-quality melt-spun Nd-Fe-Co-B-C ribbons and their bonded magnets
- School of Science and Technology, Meiji University 1-1-1, Higashimita, Tama-ku, Kawasaki 214 (Japan)
Melt-spun ribbons of Nd-Fe-Co-B-C system alloys were prepared by the single roller rapid-quenching method. The effects of composition, substrate surface velocity, and heat treatment on the magnetic properties were studied. A maximum energy product of 140.5 kJ/m{sup 3} was obtained for Nd{sub 11}Fe{sub 72}Co{sub 8}(B{sub 0.5}C{sub 0.5}){sub 9} alloy ribbon prepared at a substrate surface velocity of 17.1 m/s. The amorphous Nd{sub 11}Fe{sub 72}Co{sub 8}(B{sub 0.5}C{sub 0.5}){sub 9} ribbons prepared at a substrate surface velocity of 20.7 m/s were crystallized by heat treatment, and the optimum annealing condition was found to be at 600 {degree}C for 30 min. Then the value of ({ital BH}){sub max} was 138.5 kJ/m{sup 3}. The value of ({ital BH}){sub max} for a Nd{sub 11}Fe{sub 72}Co{sub 8}(B{sub 0.5}C{sub 0.5}){sub 9} bonded magnet prepared by using the ribbons heated at 600 {degree}C was 90.4 kJ/m{sup 3}.
- OSTI ID:
- 5098467
- Journal Information:
- Journal of Applied Physics; (United States), Vol. 70:10; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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