Process for producing permanent magnet materials

Details Process for producing permanent magnet materials Process for producing permanent magnet materials

H - Electricity

01

F

75/157, 148/5

H01F 1/08 (2006.01) C22C 33/02 (2006.01) H01F 1/057 (2006.01) H01F 41/02 (2006.01)

Patent

CA 1287750

PROCESS FOR PRODUCING PERMANENT MAGNET MATERIAL ABSTRACT Permanent magnet materials of the Fe-B-R type are produced by: preparing a metallic powder having a mean particle size of 0.3 - 80 microns and a composition of 8 - 30 at % R, 2 - 28 at % B, and the balance Fe, compacting, and sintering, at a temperature of 900 - 1200 degrees C. Co up to 50 at % may be present. Additional elements M (Ti, Ni, Bi, V, Nb, Ta, Cr, Mo, W, Mn, Al, Sb, Ge, Sn, Zr, Hf) may be present. The process is applicable for anisotropic and isotropic magnet materials.

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