Magnetically anisotropic hotworked magnet and method of producin

Details Magnetically anisotropic hotworked magnet and method of producin Magnetically anisotropic hotworked magnet and method of producin

1989-05-23

1990-08-28

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

049522515

ABSTRACT:
Anisotropic hot-worked permanent magnets are made from an R-T-B alloyed powder to which is added a combination internal lubricant including a carbon-based material such as graphite and a glass material such as glass from the B.sub.2 O.sub.3 -SiO.sub.2 BiO.sub.3 glass system. The internal lubricant provides improved formability during the hot-working step, such as die-upsetting, and provides finished magnet products wherein the individual grains are more uniformly plastically deformed throughout the product.

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

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