Anisotropic magnetic powder and magnet thereof and method of pro

Details Anisotropic magnetic powder and magnet thereof and method of pro Anisotropic magnetic powder and magnet thereof and method of pro

1987-10-27

1991-01-08

Sheehan, John P.

Metal treatment

Stock

Magnetic

420 83, 420121, H01F 1053

Patent

active

049832328

ABSTRACT:
A the magnetically anisotropic magnetic powder having an average particle size of 1-1000 .mu.m and made from a magnetically anisotropic R-TM-B-Ga or R-TM-B-Ga-M alloy having an average crystal grain size of 0.01-0.5 .mu.m, wherein R represents one or more rare earth elements including Y, TM represents Fe which may be partially substituted by Co, B boron, Ga gallium, and M one or more elements selected from the group consisting of Nb, W, V, Ta, Mo, Si, Al, Zr, Hf, P, C and Zn. This is useful for anisotropic resin-bonded magnet with high magnetic properties.

REFERENCES:
patent: 4402770 (1983-09-01), Koon et al.
patent: 4558077 (1985-12-01), Gray et al.
patent: 4601875 (1986-07-01), Yamamoto et al.
Abstract of Japanese Laid Open No. 61-263201, Nov. 21, 1986.
Tokunaga et al., "Improvement of Thermal Stability of Nd--Dy--Fe--Co--B Sintered Magnets by Additions of Al,Nb, and Ga", IEEE Transactions on Magnetics, vol. MAG-23, No. 5, Sep. 1987, pp. 2287-2289.

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