Magnetic Properties of Melt Spun Mischmetals-Fe-Ti-B Nanocomposite Ribbons
Abstract:Magnetic properties and phase evolution of melt spun R9.5Febal.Ti2B10 (R = MM(A), MM(B), MM(C), Pr, Nd, Ce, and La) nanocomposites have been investigated. Based on the results for the X-ray diffraction and thermal magnetic analysis, only 2:14:1 and α-Fe phases appear for R = MM(A) and Pr, and an additional Fe3B phase is present for R = MM(B), MM(C), Nd, and Ce. Besides, the uniform fine grain size of 20–40 nm is almost unchanged for the ribbons with various rare earth elements. Accordingly, magnetic properties of MM9.5Febal.Ti2B10 nanocomposites are mainly dominated by the composition of Mischmetals or the rare earth elements adopted, and are consistent with the outcome for the combinations of magnetic properties of their corresponding R9.5Febal.Ti2B10 nanocomposites. In this study, the optimum magnetic properties of Br = 9.3 kG, iHc = 12.1 kOe and (BH)max = 18.0 MGOe can be achieved for MM(B)9.5Febal.Ti2B10 nanocomposites. They not only exhibit comparable magnetic properties to the commercial available powders but also reduce the original material cost effectively.
Document Type: Research Article
Publication date: March 1, 2011
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