EP 0237416 B1 19891108 - A RARE EARTH-BASED PERMANENT MAGNET
Title (en)
A RARE EARTH-BASED PERMANENT MAGNET
Publication
Application
Priority
JP 4924586 A 19860306
Abstract (en)
[origin: EP0237416A1] A power-metallurgically sintered rare earth-based permanent magnet, e.g. neodymium-iron-boron magnet, can be imparted with a great increased coercive force with little decrease in the residual magnetization when the powder to be subjected to sintering is a mixture of a powder of the first alloy of neodymium, iron and boron with a minor amount of a powder of the second alloy composed of a heavy rare earth element, e.g. dysprosium, and an alloying element selected from the group consisting of aluminum, niobium, zirconium, vanadium, tantalum and molybdenum in a limited proportion.
IPC 1-7
IPC 8 full level
C22C 1/04 (2006.01); C22C 33/02 (2006.01); C22C 38/00 (2006.01); H01F 1/057 (2006.01); H01F 1/08 (2006.01)
CPC (source: EP)
C22C 1/0441 (2013.01); C22C 33/0278 (2013.01); H01F 1/0577 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0237416 A1 19870916; EP 0237416 B1 19891108; DE 3760962 D1 19891214; JP H07105289 B2 19951113; JP S62206802 A 19870911
DOCDB simple family (application)
EP 87400473 A 19870304; DE 3760962 T 19870304; JP 4924586 A 19860306