Method of making self-aligning anisotropic powder for magnets

Details Method of making self-aligning anisotropic powder for magnets Method of making self-aligning anisotropic powder for magnets

1989-10-05

1991-06-25

Dean, R.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148105, 29608, H01F 4102

Patent

active

050264389

ABSTRACT:
A method is provided for comminuting and mechanically magnetically orienting particles of hot worked rare earth-transition metal-boron alloy to make bonded anistropic magnets. The method involves comminuting a hot-worked body of the alloy to form platelet shaped particles, and applying pressure to the particles in a die in the absence of an external magnetic field.

REFERENCES:
patent: 4558077 (1985-12-01), Gray
patent: 4832891 (1989-05-01), Kass
patent: 4842656 (1989-06-01), Maines et al.
patent: 4853045 (1989-08-01), Rozendaal
patent: 4854979 (1989-08-01), Wecker
patent: 4897607 (1990-01-01), Yang et al.

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