EP 1214720 B1 20050309 - METHOD FOR PRODUCING PERMANENT MAGNETS ON THE BASIS OF BORON-LOW Nd-Fe-B ALLOY
Title (en)
METHOD FOR PRODUCING PERMANENT MAGNETS ON THE BASIS OF BORON-LOW Nd-Fe-B ALLOY
Title (de)
VERFAHREN ZUR HERSTELLUNG VON DAUERMAGNETEN AUS BORARMEn Nd-Fe-B-LEGIERUNG
Title (fr)
PROCEDE DE PRODUCTION D'AIMANTS PERMANENTS A PARTIR D'ALLIAGE Nd-Fe-B A FAIBLE TENEUR EN BORE
Publication
Application
Priority
- DE 19945942 A 19990924
- EP 0009128 W 20000918
Abstract (en)
[origin: DE19945942A1] The invention relates to boron-low Nd-Fe-B permanent magnets that have high coercive forces. To this end, the concentrations have to meet the following requirements: 26.9 wt.- % </= [SE]eff </= 33 wt.- %; 2.185 - 0.0442 [SE]eff </= [B]eff </= 1.363 - 1.0136 [SE]eff [Dy + Tb + Ho] </= 50 % [SE]eff; 0.5 wt.- % </= [Co] </= 5 wt.- %; 0.05 wt.- % </= [Cu] </= 0.3 wt.- %; 0.05 wt.- % </= [Ga] </= 0.35 wt.- %; 0.02 wt.- % </= [Al] </= 0.3 wt.- %.
IPC 1-7
IPC 8 full level
B22F 3/00 (2006.01); B22F 3/02 (2006.01); B22F 3/24 (2006.01); C21D 6/00 (2006.01); C22C 33/02 (2006.01); C22C 38/00 (2006.01); H01F 1/053 (2006.01); H01F 1/057 (2006.01)
CPC (source: EP)
H01F 1/057 (2013.01); H01F 1/0577 (2013.01)
Designated contracting state (EPC)
DE FI
DOCDB simple family (publication)
DE 19945942 A1 20010412; DE 19945942 C2 20030717; DE 50009741 D1 20050414; EP 1214720 A1 20020619; EP 1214720 B1 20050309; JP 2003510467 A 20030318; WO 0124203 A1 20010405
DOCDB simple family (application)
DE 19945942 A 19990924; DE 50009741 T 20000918; EP 0009128 W 20000918; EP 00962502 A 20000918; JP 2001527302 A 20000918