EP 0860014 A1 19980826 - MAGNETIC MATERIAL AND PERMANENT MAGNET OF THE NdFeB TYPE
Title (en)
MAGNETIC MATERIAL AND PERMANENT MAGNET OF THE NdFeB TYPE
Title (de)
MAGNETMATERIAL UND DAUERMAGNET DES NdFeB-TYPS
Title (fr)
MATERIAU MAGNETIQUE ET AIMANT PERMANENT DE TYPE NdFeB
Publication
Application
Priority
- DE 19541948 A 19951110
- EP 9604836 W 19961106
Abstract (en)
[origin: DE19541948A1] The invention concerns a magnetic material and a permanent magnet of the NdFeB type. Intrinsic and structure-dependent resistance to corrosion is brought about by the specific addition of additives such as Dy, Co, Nb, Al, Ga and Cu to the base alloy of NdFeb. For standard applications, an additional coating can be dispensed with. However, the material is also more insensitive to the media to be contacted during electroplating, for example, and can be coated easily. Improved temperature coefficients of the residual magnetism and, with a suitable choice of alloys, high coercive field intensities even at high temperatures permit use at above 200 DEG C. Owing to higher magnetic flux densities in the temperature range of up to 200 DEG C, the proven but more expensive Sm2(TM)17 materials can be replaced in a great many applications.
IPC 1-7
IPC 8 full level
H01F 1/057 (2006.01); H01F 41/02 (2006.01)
CPC (source: EP)
H01F 1/057 (2013.01); H01F 41/026 (2013.01)
Citation (search report)
See references of WO 9717709A1
Designated contracting state (EPC)
AT BE CH DE ES FI FR GB IT LI NL PT SE
DOCDB simple family (publication)
DE 19541948 A1 19970515; EP 0860014 A1 19980826; WO 9717709 A1 19970515
DOCDB simple family (application)
DE 19541948 A 19951110; EP 9604836 W 19961106; EP 96938104 A 19961106