Method for producing rare earth alloy magnet powder

Details Method for producing rare earth alloy magnet powder Method for producing rare earth alloy magnet powder

1994-10-06

1995-05-23

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148122, H01F 1057

Patent

active

054177731

ABSTRACT:
The present invention provides a method for producing a rare earth alloy magnet powder exhibiting stable and superior magnetic properties using hydrogenation followed by dehydrogenation. In a method for producing a rare earth alloy magnet powder wherein a homogenized rare earth alloy magnet alloy material is subjected to hydrogenation at a temperature in a range between 750.degree. C. and 950.degree. C., followed by dehydrogenation at a temperature in a range between 750.degree. C. and 950.degree. C.; cooled; and crushed, both the hydrogenation and the dehydrogenation are carried out in a vacuum tube furnace; and the alloy material in the dehydrogenation step maintains a temperature drop of at most 50.degree. C. due to an endothermic reaction which occurs during the dehydrogenation step.

REFERENCES:
patent: 4981532 (1991-01-01), Takeshita et al.

Affiliated with

Also associated with

Rating

Method for producing rare earth alloy magnet powder does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing rare earth alloy magnet powder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing rare earth alloy magnet powder will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2137682