EP 0124655 B1 19890920 - ISOTROPIC PERMANENT MAGNETS AND PROCESS FOR PRODUCING SAME
Title (en)
ISOTROPIC PERMANENT MAGNETS AND PROCESS FOR PRODUCING SAME
Publication
Application
Priority
- JP 7909683 A 19830506
- JP 7909883 A 19830506
Abstract (en)
[origin: EP0124655A2] Isotropic permanent magnet formed of a sintered body having a mean crystal grain size of 1-160 microns and a major phase of tetragonal system comprising, in atomic percent, 10-25% of R wherein R represents at least one of rare-earth elements including Y,3-23% of B and the balance being Fe. As additional elements M, Al, Ti, V, Cr, Mn, Zr, Hf, Nb, Ta, Mo, Ge, Sb, Sn, Bi, Ni or W may be incorporated. The magnets can be produced through a powder metallurgical process resulting in high magnetic properties, e.g., up to 7 MGOe or higher energy product.
IPC 1-7
IPC 8 full level
H01F 1/057 (2006.01)
CPC (source: EP)
H01F 1/0577 (2013.01)
Designated contracting state (EPC)
BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0124655 A2 19841114; EP 0124655 A3 19860910; EP 0124655 B1 19890920; CA 1277159 C 19901204; DE 3380612 D1 19891026; HK 68390 A 19900907; SG 49090 G 19900817
DOCDB simple family (application)
EP 83113252 A 19831230; CA 444488 A 19831230; DE 3380612 T 19831230; HK 68390 A 19900830; SG 49090 A 19900704