Hot worked Nd-Fe-B permanent magnets: effect of additional element such as Dy, Si, Ce, Ti, Co and others

Author

Nozieres, J.P. ; de la Bathie, R.Perrier

Author_Institution

CNRS, Lab., Louis Neel, Grenoble, France

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

4117

Lastpage

4119

Abstract

A novel process of permanent magnet preparation has been developed. Coercivity is obtained by breaking grains of the bulk material by hot-working cast ingots of NdFeB alloy. The result is a permanent magnetic material obtained directly from the as-cast alloy. Addition of Al and/or Dy greatly increases coercivity, as observed in sintered magnets. Co is effective in raising the Curie temperature without affecting coercivity. Other additional elements do not improve the magnetic properties

Keywords

Curie temperature; alloying additions; boron alloys; coercive force; demagnetisation; ferromagnetic properties of substances; hot working; iron alloys; neodymium alloys; permanent magnets; Curie temperature; Nd-Fe-B; NdFeBAl; NdFeBCe; NdFeBCo; NdFeBDy; NdFeBHf; NdFeBMn; NdFeBSi; NdFeBTi; NdFeBZr; coercivity; demagnetisation curves; hot-working; magnetic properties; permanent magnets; sintered magnets; Coatings; Cobalt alloys; Coercive force; Demagnetization; Iron; Magnetic materials; Magnetic properties; Permanent magnets; Superconducting magnets; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42540

Filename

42540