Rare earth element magnet and method of manufacturing same

Details Rare earth element magnet and method of manufacturing same Rare earth element magnet and method of manufacturing same

2011-04-19

2011-04-19

Koslow, C. Melissa (Department: 1734)

Compositions

Magnetic

Free metal or alloy containing

C148S302000, C148S101000, C148S122000, C428S702000, C428S323000, C428S402000, C428S403000, C264S611000, C264S612000, C264S621000, C264S624000

Reexamination Certificate

active

07927501

ABSTRACT:
A magnet comprising magnetic powder containing at least one rare earth metal element, and an oxide binder for binding the magnetic powder, wherein an inter-face distance of the binder determined by diffraction analysis is 0.25 to 2.94 nm. The disclosure also discloses a method of manufacturing a magnet comprising; compacting magnetic powder containing at least one rare earth element under pressure in a mold; impregnating the compacted magnetic powder molding with a precursor solution of an oxide material; and heat-treating the compacted magnetic molding impregnated with the precursor thereby to impart an inter-face distance determined by diffraction analysis to the binder in the compacted molding. The distance is 0.25 to 2.94 nm.

REFERENCES:
patent: 5858124 (1999-01-01), Endo et al.
patent: 6054219 (2000-04-01), Satsu et al.
patent: 7147686 (2006-12-01), Tayu et al.
patent: 2006/0222848 (2006-10-01), Satsu et al.
patent: H06-69009 (1994-11-01), None
patent: 8-115809 (1996-05-01), None
patent: 10-321427 (1997-05-01), None
patent: 10-321427 (1998-12-01), None
Translation for JP 10-321427.
Official Action dated Nov. 2, 2010; Patent Application No. 2006-313720; 1 page; Japan Patent Office; Japan.

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