Title :
Microstructure and magnetic properties of sintered Nd-Fe-C magnets
Author_Institution :
Vacuumschmelze GmbH, Hanau, Germany
fDate :
3/1/1994 12:00:00 AM
Abstract :
Sintered magnets of nominal composition Nd15Fe77 C8 (magnet A) and of a Nd- and C- rich composition Nd 28Fe63C9 (magnet B) have been prepared by the conventional powder metallurgy. The magnets show a nearly isotropic behaviour, the magnetic polarization at an applied magnetic field of 1350 kA/m was about J(1350 kA/m)=1.1 T, the coercivity of the polarization, HcJ, was rather small, the highest values in the annealed magnets were only about 250 kA/m. From these results we can make the conclusion, that the preparation of sintered Nd-Fe-C composition by the conventional powder metallurgy is not promising for the production of permanent magnets
Keywords :
coercive force; crystal microstructure; ferromagnetic properties of substances; iron alloys; neodymium alloys; permanent magnets; sintering; 1.1 T; Nd15Fe77C8; Nd28Fe63C9; annealed; coercivity; magnetic polarization; microstructure; permanent magnets; powder metallurgy; sintered magnets; Annealing; Coercive force; Iron; Magnetic fields; Magnetic properties; Magnets; Microstructure; Neodymium; Polarization; Powders;
Journal_Title :
Magnetics, IEEE Transactions on
