Radially anisotropic sintered R-Fe-B-based magnet and production

Details Radially anisotropic sintered R-Fe-B-based magnet and production Radially anisotropic sintered R-Fe-B-based magnet and production

1997-08-07

1999-06-15

Sheehan, John

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

148302, 148104, 335302, 419 12, C22C 2914

Patent

active

059132558

ABSTRACT:
A method of producing a radially anisotropic sintered R-Fe-B-based magnet wherein R is at least one rare earth element including Y, in which a green body stack comprising a plurality of compact bodies are formed in series by the same die. The density of the compact body is regulated to 3.1 g/cm.sup.3 or more, and increased at the final compacting step to a density at least 0.2 g/cm.sup.3 higher than that before the final compacting step. By so regulating the density of the green body, the cracking during the sintering process at the binding portion, an interface between the stacked compact bodies, can be minimized while retaining high magnetic properties of the resulting magnet.

REFERENCES:
patent: 4678634 (1987-07-01), Tawara et al.
patent: 4881984 (1989-11-01), Chandhok et al.
patent: 4888512 (1989-12-01), Shimizu
patent: 4960469 (1990-10-01), Tanigawa et al.
patent: 4990306 (1991-02-01), Ohashi
patent: 5342574 (1994-08-01), Kasai et al.

Affiliated with

Also associated with

Rating

Radially anisotropic sintered R-Fe-B-based magnet and production does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Radially anisotropic sintered R-Fe-B-based magnet and production, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radially anisotropic sintered R-Fe-B-based magnet and production will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-410799