Rare earth magnet having high strength and high electrical...

Details Rare earth magnet having high strength and high electrical... Rare earth magnet having high strength and high electrical...

2011-04-05

2011-04-05

Rickman, Holly (Department: 1785)

Stock material or miscellaneous articles

Composite

Of inorganic material

Reexamination Certificate

active

07919200

ABSTRACT:
This rare earth magnet having high strength and high electrical resistance has a structure including an R—Fe—B-based rare earth magnet particles18which are enclosed with a high strength and high electrical resistance composite layer12. The high strength and high electrical resistance composite layer12is constituted from a glass-based layer16that has a structure comprising a glass phase or R oxide particles13dispersed in glass phase, and R oxide particle-based mixture layers17that are formed on both sides of the glass-based layer16and contain an R-rich alloy phase14which contains50atomic % or more of R in the grain boundary of the R oxide particles.

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