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

1989-03-23

1990-12-18

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148104, 419 11, 419 12, 419 14, 419 35, H01F 108

Patent

active

049783980

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 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 than 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.

REFERENCES:
patent: 4780226 (1988-10-01), Sheets et al.

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