Synthesis and characterization of Fe3AlC0.5 by mechanical alloying |
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Authors: | W. Barona Mercado M. Fajardo G. A. Pérez Alcázar H. Sánchez Sthepa |
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Affiliation: | (1) Universidad Santiago de Cali, A.A. 4102 Santiago de Cali, Colombia;(2) Departamento de Física, Universidad del Valle, A.A. 25360 Cali, Colombia;(3) Escuela Ingeniería de Materiales, Universidad del Valle, A.A. 25360 Cali, Colombia |
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Abstract: | Double iron and aluminum carbides were prepared by mechanical alloying from elemental powders, with a ball-to-powder weight ratio 20:1. The samples were milled for 1, 3, 5, 10, 15, 20 and 25 h. The alloy progress for each milling time was evaluated by X-ray diffraction (XRD) and 57Fe Mössbauer spectroscopy. Once the alloy was consolidated two sorts of paramagnetic sites and a magnetic distribution were detected according to the Mössbauer fit. The majority doublet could correspond to Fe3AlC0.5 carbide as X-ray diffraction suggest, and the other could be Fe3AlC0.69; the magnetic distribution corresponding to Fe3Al phase, Fe7C3 and Fe5C2 single carbides. The hyperfine parameters are reported. |
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Keywords: | double carbide mechanical alloying M?ssbauer spectroscopy |
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