Rare earth, iron carbon permanent magnet alloys and method for p

Details Rare earth, iron carbon permanent magnet alloys and method for p Rare earth, iron carbon permanent magnet alloys and method for p

1988-05-09

1989-07-18

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148301, 148302, 420 83, 420121, 420 9, 420 13, 420 14, H01F 102

Patent

active

048490350

ABSTRACT:
A permanent magnet alloy having at least one light rare earth element, iron and carbon. The alloy has a cellular microstructure of at least two solid phases with a Fe.sub.14 R.sub.2 C.sub.1 magnetically hard, tetragonal major phase surrounded by at least one minor phase. The light rare earth element may be Pr or Nd. At least one heavy rare earth element, such as Dy, may be used. Boron may be included in the alloy. The alloy is produced by casting and heating to form the Fe.sub.14 R.sub.2 (C,B).sub.1 magnetically hard, tetragonal major phase.

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