Raw material powder for modified permanent magnets and productio

Details Raw material powder for modified permanent magnets and productio Raw material powder for modified permanent magnets and productio

1997-07-16

2000-04-18

Sheehan, John

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148302, 75255, 419 12, H01F 1057

Patent

active

060510773

ABSTRACT:
The present invention is directed to provide a raw material powder for modified permanent magnets capable of enhancing magnetic properties of iron.rare earth element metal.boron permanent magnets and reducing the production cost, and further to provide its production method. The raw material powder is a pulverized powder of sintered mass obtained by sintering in vacuum or in a non-oxidative gas a mixture of an acicular iron powder and an alloy powder containing iron, a rare earth element metal and boron.

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patent: 4802931 (1989-02-01), Croat
patent: 5443617 (1995-08-01), Takahashi
patent: 5478409 (1995-12-01), Takahashi
patent: 5569333 (1996-10-01), Takahashi
patent: 5728232 (1998-03-01), Takahashi

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