EP 2237289 B1 20120919 - Method of Producing Rare-Earth Magnet
Title (en)
Method of Producing Rare-Earth Magnet
Title (de)
Verfahren zur Herstellung eines Seltenerdmagneten
Title (fr)
Procédé pour la production d'un aimant de terres rares
Publication
Application
Priority
- JP 2009082275 A 20090330
- JP 2010002995 A 20100108
Abstract (en)
[origin: EP2237289A1] A method of producing a rare-earth magnet containing a rare-earth compound having a first rare-earth element and a second rare-earth element different from the first rare-earth element includes: a mixing step of mixing rare-earth compound powder including the first rare-earth element and subjected to a process based on hydrogenation disproportionation desorption recombination with a diffusion material including the second rare-earth element; a molding step of molding the mixed powder into a compact in a magnetic field; and a heating step of heating the compact to diffuse the second rare-earth element into the rare-earth compound powder.
IPC 8 full level
B22F 3/26 (2006.01); B22F 9/02 (2006.01); C22C 1/04 (2006.01); C22C 33/02 (2006.01); H01F 1/055 (2006.01); H01F 1/057 (2006.01); H01F 1/08 (2006.01); H01F 1/09 (2006.01); H01F 41/02 (2006.01)
CPC (source: EP US)
B22F 3/087 (2013.01 - EP US); H01F 1/0553 (2013.01 - EP US); H01F 1/0556 (2013.01 - EP US); H01F 1/0558 (2013.01 - EP US); H01F 1/0573 (2013.01 - EP US); H01F 1/0576 (2013.01 - EP US); H01F 1/0578 (2013.01 - EP US); H01F 1/08 (2013.01 - EP US); H01F 1/09 (2013.01 - EP US); H01F 41/0266 (2013.01 - EP US); H01F 41/0273 (2013.01 - EP US); H01F 41/0293 (2013.01 - EP US); B22F 2998/10 (2013.01 - EP US); H01F 1/083 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
EP 2237289 A1 20101006; EP 2237289 B1 20120919; CN 101853724 A 20101006; CN 101853724 B 20120620; JP 2010258412 A 20101111; JP 4835758 B2 20111214; US 2010247367 A1 20100930
DOCDB simple family (application)
EP 10158135 A 20100329; CN 201010158481 A 20100330; JP 2010002995 A 20100108; US 74916510 A 20100329