Microstructure and magnetic properties of sintered Nd-Fe-C magnets

Author

Fernengel, W.

Author_Institution

Vacuumschmelze GmbH, Hanau, Germany

Volume

30

Issue

2

fYear

1994

fDate

3/1/1994 12:00:00 AM

Firstpage

634

Lastpage

635

Abstract

Sintered magnets of nominal composition Nd₁₅Fe₇₇C₈ (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, H_cJ, 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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.312359

Filename

312359