Magnetically anisotropic hot-worked magnet and method of produci

Details Magnetically anisotropic hot-worked magnet and method of produci Magnetically anisotropic hot-worked magnet and method of produci

1990-06-01

1992-06-30

Sheehan, John P.

Metal treatment

Stock

Magnetic

75234, 75233, 75237, 75238, 420 83, 420121, H01F 1053

Patent

active

051259907

ABSTRACT:
A magnetically anisotropic hot-worked magnet made of an R-T-B alloy containing a transition metal T as a main component, a rare earth element R including yttrium, and boron B; the magnet having the fine crystal grains having an average grain size of 0.02 -1.0 .mu.m, and having a carbon content of 0.8 weight % or less and an oxygen content of 0.5 weight % or less. The angular variance of orientation of the crystal grains is within 30.degree. from the C axes of the crystal grains when measured by X-ray. This magnet can be produced by mixing the magnet flakes with an additive composed of at least one organic compound having a boiling point of 50.degree. C. or higher.

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