High-energy isotropic resin bonded magnets produced from (Nd,Dy)-(Fe,Co)-B nanocomposite alloys

Author

Arai, Akira ; Kato, Hiroshi ; Akioka, Koji

Author_Institution

Dept. of Adv. Syst. & Mater., Seiko Epson Corp., Nagano, Japan

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

2555

Lastpage

2557

Abstract

Rapidly quenched (Nd,Dy)-(Fe,Co)-B alloys were formed into ribbons. Dy substitution and Co substitution enhanced coercivity and remanence, respectively. Among the investigated ribbons, (Nd_0.9Dy_0.1)₉(Fe_0.9Co_0.1) _bal.B_5.5 showed the best magnetic properties. Isotropic resin bonded magnets were produced from the alloys, and the bonded magnet of (Nd_0.9Dy_0.1)₉(Fe_0.9Co _0.1)_bal.B_5.5 showed the highest energy product: 112 kJ/m³ (14.1 MGOe). The irreversible flux loss after exposure at 393 K was -5.1%. These excellent properties were due to fine and uniform crystalline nanocomposite structure

Keywords

boron alloys; cobalt alloys; coercive force; dysprosium alloys; ferromagnetic materials; iron alloys; nanostructured materials; neodymium alloys; permanent magnets; remanence; (Nd,Dy)-(Fe,Co)-B nanocomposite alloys; (Nd_0.9Dy_0.1)₉(Fe_0.9Co _0.1)B_5.5; 393 K; Co substitution; Dy substitution; NdDyFeCoB; coercivity; energy product; fine uniform crystalline nanocomposite structure; high-energy isotropic resin bonded magnets; irreversible flux loss; isotropic resin bonded magnets; magnetic properties; rapidly quenched (Nd,Dy)-(Fe,Co)-B alloys; remanence; ribbons; Bonding; Cobalt alloys; Coercive force; Crystallization; Iron alloys; Magnetic properties; Magnets; Neodymium; Remanence; Resins;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.951233

Filename

951233