EP 0144112 B1 19890927 - HIGH ENERGY PRODUCT RARE EARTH-TRANSITION METAL MAGNET ALLOYS CONTAINING BORON
Title (en)
HIGH ENERGY PRODUCT RARE EARTH-TRANSITION METAL MAGNET ALLOYS CONTAINING BORON
Publication
Application
Priority
US 54472883 A 19831026
Abstract (en)
[origin: EP0144112A1] Magnetically hard compositions having high values of coercivity, remanence and energy product contain rare earth elements, transition metal elements and boron in suitable proportions. The preferred rare earth elements are neodymium and praseodymium, and the preferred transition metal element is iron. The magnetic alloys have characteristic very finely crystalline microstructures, in which there is present a tetragonal crystal phase with an atomic formula of RE2TM14B1, in which: RE represents one or more rare earth elements, with neodymium and or praseodymium comprising at least 60 atomic percent thereof; and TM represents one or more transition metal elements, with iron ornprising at least 60 atomic percent thereof.
IPC 1-7
IPC 8 full level
C22C 38/00 (2006.01); H01F 1/057 (2006.01)
CPC (source: EP)
C22C 38/00 (2013.01); H01F 1/057 (2013.01)
Citation (examination)
- EP 0101552 A2 19840229 - SUMITOMO SPEC METALS [JP]
- EP 0106948 A2 19840502 - SUMITOMO SPEC METALS [JP]
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0144112 A1 19850612; EP 0144112 B1 19890927; BR 8400917 A 19850611; DE 3479940 D1 19891102; MX 167656 B 19930401; ZA 841312 B 19850925
DOCDB simple family (application)
EP 84300741 A 19840207; BR 8400917 A 19840228; DE 3479940 T 19840207; MX 2660284 A 19840301; ZA 841312 A 19840222