High energy ball milling method for making rare earth-transition

Details High energy ball milling method for making rare earth-transition High energy ball milling method for making rare earth-transition

1986-07-15

1988-10-18

Sheehan, John P.

Coopering

Crozing staves

Rotary cutter

H01F 102

Patent

active

047785420

ABSTRACT:
Fully crystalline forms of rare earth-transition metal-boron compositions can be attrited under high-energy conditions (such as high energy ball milling) to product homogeneous alloy with crystals smaller than single magnetic domain size. Such alloy can be annealed or hot formed to produce permanent magnets with high magnetic energy products.

REFERENCES:
patent: 4043845 (1977-08-01), Dionne
patent: 4135953 (1979-01-01), Nagel et al.

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