Solidification structures and magnetic properties of NdFeB alloys produced by twin-roller quenching technique

Author

Grunberger, W. ; Schmidt, M. ; Springmann, B.

Author_Institution

Inst. fur Festkorper und Werkstofforschung e.V., Dresden, Germany

Volume

30

Issue

2

fYear

1994

fDate

3/1/1994 12:00:00 AM

Firstpage

636

Lastpage

638

Abstract

The relationship between microstructures and magnetic properties of NdFeB ribbons or flakes produced by twin-roller quenching was investigated. Dependent on the process parameters magnetically isotropic cell structures or anisotropic columnar structures were obtained. The magnetic properties of the columns did not meet the expectations. High press forces on the rollers did not improve the anisotropy of the partially pulverized flakes. The results are discussed in terms of constitutional conditions and deformation mechanisms

Keywords

boron alloys; crystal microstructure; deformation; ferromagnetic properties of substances; iron alloys; magnetic anisotropy; magnetostriction; neodymium alloys; permanent magnets; quench hardening; NdFeB; anisotropic columnar structures; deformation mechanism; high press forces; microstructures; partially pulverized flakes; solidification structures; twin-roller quenching; Anisotropic magnetoresistance; Argon; Magnetic anisotropy; Magnetic properties; Microstructure; Optical microscopy; Orifices; Powders; Pulse measurements; Scanning electron microscopy;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.312360

Filename

312360