Title :
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
fDate :
7/1/2001 12:00:00 AM
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, (Nd0.9 Dy0.1)9(Fe0.9Co0.1) bal.B5.5 showed the best magnetic properties. Isotropic resin bonded magnets were produced from the alloys, and the bonded magnet of (Nd0.9Dy0.1)9(Fe0.9Co 0.1)bal.B5.5 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; (Nd0.9Dy0.1)9(Fe0.9Co 0.1)B5.5; 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;
Journal_Title :
Magnetics, IEEE Transactions on
