Method of manufacturing magnetically anisotropic R-T-B-M powder

Details Method of manufacturing magnetically anisotropic R-T-B-M powder Method of manufacturing magnetically anisotropic R-T-B-M powder

1993-10-29

1996-01-23

Sheehan, John

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148102, 148104, 148105, 148122, H01F 103

Patent

active

054862396

ABSTRACT:
A magnetically anisotropic R-T-B-M powder material which is starting with an R-T-B-M raw alloy material having a c-axis crystal orientation of an R.sub.2 T.sub.14 B-type intermetallic compound phase. In one embodiment, the starting material is compressed sintered in a magnetic field and recompressed in a magnetic field. In a second embodiment, the starting material is hot-pressed and homogenized. A method of manufacturing anisotropic magnets such as bond and full density magnets made from the magnetically anisotropic R-T-B-M powder material is disclosed.

REFERENCES:
patent: 5110374 (1992-05-01), Takeshita et al.
patent: 5143560 (1992-09-01), Doser

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