The Effect of External Magnetic Field on Microstructure and Magnetic Properties of Melt-Spun Nd-Fe-B/Fe-Co Nanocomposite Ribbons. (12th September 2013)

• Record Type: Journal Article
• Authors: Nguyen, Xuan Truong; Vu, Hong Ky; Do, Hung Manh; Nguyen, Van Khanh; Nguyen, Van Vuong
• Other Names: Lejcek Pavel Academic Editor.
• Is Part Of: Advances in materials science and engineering. Volume 2013(2013)
• Publication Date: 2013-09-12
• Subjects: Materials science -- Periodicals; Materials science; Periodicals; 620.11
• DOI: 10.1155/2013/927356
• Languages: English
• ISSNs: 1687-8434

Abstract

Abstract : The ribbons Nd2 Fe14 B/Fe-Co were prepared with the nominal composition Nd16 Fe76 B8 /40% wt. Fe65 Co35 by the conventional and the developed magnetic field-assisted melt-spinning (MFMS) techniques. Both ribbons are nanocomposites with the smooth single-phase-like magnetization loops. The 0.32 T magnetic field perpendicular to the wheel surface and assisting the melt-spinning process reduces the grain size inside the ribbon, increases the texture of the ribbon, improves the exchange coupling, and, in sequence, increases the energy product ( BH ) max of the isotropic powdered samples of MFMS ribbon in ~9% by comparison with that of the ribbon melt-spun conventionally. The grain size reduction effect caused by the assisted magnetic field has also been described quantitatively. The MFMS technique seems to be promising for producing high-performance nanocomposite ribbons.