Magnetic properties and microstructure of rapidly quenched SmZrFeCoN magnets

Journal Article · Wed Sep 01 04:00:00 EDT 1999 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)

DOI:https://doi.org/10.1109/20.800501· OSTI ID:20000757

Kawashima, F; Sakurada, S; Sawa, T; Arai, T; Tsutai, A; Sahashi, M

Dependence of magnetic properties and microstructure on boron additions for nitrogenated (Sm,Zr)(Fe,Co){sub 9} alloys fabricated by rapidly quenching was investigated. The condition for getting high (BH){sub max} with high {sub i}H{sub c} is to produce an amorphous phase in the rapidly quenched sample because it leads to the precipitation of uniform and fine grains by the annealing above their crystallization temperature. The role of boron is to form the amorphous phase easily by rapidly quenching. High (BH){sub max} of about 20MGOe with high {sub i}H{sub c} of 9.6kOe was obtained for nitrogenated (Sm{sub 0.7}Zr{sub 0.3})(Fe{sub 0.95}Co{sub 0.05}){sub 9}B{sub 0.1}. High (BH){sub max} of 13.0MGOe was also attained as an isotropic resin bonded magnet with density of 6.2 g/cm{sup 3}.

• Research Organization: Toshiba Corp., Kawasaki (JP)
• OSTI ID: 20000757
• 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

Related Subjects

36 MATERIALS SCIENCE
AMORPHOUS STATE
BORON ADDITIONS
COBALT ALLOYS
IRON ALLOYS
MAGNETIC PROPERTIES
METALLURGICAL EFFECTS
MICROSTRUCTURE
NITROGEN ADDITIONS
SAMARIUM ALLOYS
ZIRCONIUM ALLOYS