Permanent magnets

Details Permanent magnets Permanent magnets

1988-07-29

1991-09-17

Sheehan, John P.

Metal treatment

Stock

Magnetic

420 83, 420121, 75244, 252 6253, 252 6254, 252 6255, H01F 1053

Patent

active

050492080

ABSTRACT:
A permanent magnet having high coercivity and energy product contains rare earth elements, boron, at least one element of Ti, V, Cr, Zr, Nb, Mo, Hf, Ta and W, and a blance of Fe or Fe and Co, and consists of a primary phase of substantially tetragonal grain structure, or a mixture of such a primary phase and an amorphous or crystalline rare earth element-poor auxiliary phase wherein the volume ratio of auxiliary phase to primary phase is smaller than a specific value.

REFERENCES:
patent: 4802931 (1989-02-01), Croat
patent: 4836868 (1989-06-01), Yajima
Search report for European Patent Application 88-112260.0.
Nikkei New Materials, Apr. 28 (1986), pp. 76-84.
Oyobuturi, (Applied Physics), vol. 55, (1986), pp. 121-125.
J. App. Phys., 62, pp. 967-971 (1987).
Journal of Less-Common Metals, 115 (1986), pp. 357-366, "Phase Relationships, Magnetic and Crystallographic Properties of Nd-Fe-B Alloys", K. H. J. Buschow, et al.
IEEE Transaction on Magnetics, vol. Mag-21, No. 5, Sep., 1985, pp. 1955-1957, "Analytical Microscope Studies of Sintered Nd-Fe-B Magnets", J. Fidler et al.
J. Fidler, et al, Paper No. 19P0103 at the 10th International Workshop on Rare-Earth Magnets and Their Applications, Kyoto, Japan, May 16-19, 1989.

Affiliated with

Also associated with

Rating

Permanent magnets does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Permanent magnets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Permanent magnets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1914685