Sm-Fe-V magnet alloy and method of making same

Details Sm-Fe-V magnet alloy and method of making same Sm-Fe-V magnet alloy and method of making same

1989-03-03

1990-11-13

Sheehan, John P.

Metal treatment

Stock

Magnetic

420 83, 420127, H01F 104

Patent

active

049699610

ABSTRACT:
A magnetically hard compound having the approximate formula SmFe.sub.10 V.sub.2 formed by rapidly quenching a molten mixture of the precursors either with or without subsequent annealing exhibits an intrinsic room temperature coercivity of at least 5 kOe. A mixture of samarium, iron and vanadium is melted and then rapidly quenched by metal spinning to form a fine grained structure with magnetic anisotropy as quenched. Alternatively, the molten material is over-quenched and then annealed to optimize the magnetic properties of the alloy.

REFERENCES:
patent: 4322257 (1982-03-01), Menth et al.
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Buschow et al., "Magnetic Properties of Ternary Fe-Rich Rare Earth Intermetallic Compounds", IEEE Transactions of Magnetics, vol. 24, No. 2, Mar. 1988, pp. 1611-1616.
DeBoer et al., "Magnetic Properties of a Series of Novel Ternary Intermetallics (RFe.sub.10 V.sub.2)", Journal of the Less-Common Metals, vol. 135, 1987, pp. 199-204.
DeMooij et al., "A New Class of Ferromagnetic Materials: RFe.sub.10 V.sub.2 ", Phillips Journal of Research, vol. 42, No. 2, 1987, pp. 246-251.
DeMooij et al., "Some Novel Ternary ThMn.sub.12 -Type Compounds", Journal of the Less-Common Metals, vol. 136, 1988, pp. 207-215.
Hadjipanayis et al., "Hard Magnetic Properties of R-Fe-Ti Alloys", Applied Physics Letters, vol. 51, No. 24, Dec. 14, 1987, pp. 2048-2050.
Muller, "Magnetic Material R,Fe,Mo,(Co) with ThMn.sub.12 Structure", Journal of Applied Physics, vol. 64, No. 1, Jul. 1, 1988, pp. 249-251.
"New Mag Material?", Rare-Earth Information Center News, Institute for Physical Research and Technology, Iowa State University, Ames, Iowa, vol. XXIII, No. 2, Jun. 1, 1988, pp. 1, 5.
Ohashi et al., "The Magnetic and Structural Properties of R-Ti-Fe Ternary Compounds", IEEE Transactions on Magnetics, vol. MAG-23, No. 5, Sep. 1987, pp. 3101-3103.
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