Alloy thin ribbon for rare earth magnet, production method...

Details Alloy thin ribbon for rare earth magnet, production method... Alloy thin ribbon for rare earth magnet, production method...

2007-10-09

2007-10-09

Sheehan, John P. (Department: 1742)

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

C164S463000, C164S477000

Reexamination Certificate

active

11207812

ABSTRACT:
The present invention provides a rare earth magnet superior in magnetic properties and thermal stability. In an aspect of the present invention, a production method of an alloy thin ribbon for a rare earth magnet includes a step to obtain a quenched thin ribbon by feeding a molten alloy containing praseodymium (Pr), iron (Fe), cobalt (Co), titanium (Ti), boron (B), and silicon (Si) on a rotating roll and a step to apply heat treatment to the quenched thin ribbon at a heating rate within a range of 100° to 150° C./min to crystallize the quenched thin ribbon.

REFERENCES:
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patent: 5454998 (1995-10-01), Bogatin et al.
patent: 6302939 (2001-10-01), Rabin et al.
patent: 2004/0079449 (2004-04-01), Kanekiyo et al.
patent: 3277932 (2002-01-01), None
H. Yamamoto et al.—The Journal of Magnetics Society of Japan, 2003, vol. 27, No. 5, pp. 698-703.
English Language Partial Translation for H. Yamamoto et al.—The Journal of Magnetics Society of Japan, 2003, vol. 27, No. 5, pp. 698-703.

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