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Advances in Materials Science and Engineering
Volume 2013, Article ID 620761, 5 pages
http://dx.doi.org/10.1155/2013/620761
Research Article

Influence of Annealing Temperature on the Magnetic Properties of Rapidly Quenched (Nd,Pr)2-(Fe,Co,Ga,Ti,C)14B/α-Fe Nanocomposite Ribbons

1Advanced Material and Nanotechnology Laboratory, Institute of Advanced Technology (ITMA), Universiti Putra Malaysia, UPM Serdang 43400, Selangor, Malaysia
2Physics Department, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
3Advanced Materials and Renewal Energy Department, Iran Research Organization for Science and Technology (IROST), Tehran, Iran

Received 26 September 2013; Accepted 8 November 2013

Academic Editor: Luís Cunha

Copyright © 2013 Rahim Sabbaghizadeh et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The effects of different heat treatment temperatures on the structure and magnetic properties of Nd-Fe-B nanocomposite permanent magnetic alloys with nominal composition of Nd9.4Pr0.6Fe74.5Co6B6Ga0.5Ti1.5C1.5 have been investigated. The most practical method to produce nanostructured metallic materials is rapid solidification. Melt spinning with constant wheel speed of  m/s was employed to produce ribbons. As-spun ribbons were examined by using differential scanning calorimetry (DSC) and X-ray diffractometer (XRD) with Cu-kα radiation. The ribbons were annealed at different temperatures in order to extract the best magnetic properties. The XRD and electron microscopy technique results confirm that grains are in the size of less than 50 nm. In addition, optimum magnetic properties were obtained at 700°C annealed temperature.