Abstract
The dealloying behavior of Al-15Fe (at.%) ribbons in a 5 mol·L-1 NaOH solution under static magnetic field has been investigated. The as-dealloyed samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) analysis. The results reveal that Al atoms can be leached out from the a-Al(Fe) and Al13Fe4 phases in NaOH solutions with magnetic field, and the magnetic field can significantly reduce the particle size of the as-dealloyed samples comparing with those from non-treatment dealloying (1093 ± 202 nm). The average edge lengths of these octahedra are 303 ± 67 nm (under 0.25 T), 380 ± 141 nm (0.5 T), 421 ± 187 nm (0.75 T), respectively, implying that an optimized selection of magnetic intensity is helpful to obtain refined Fe3O4 particles. In addition, the particle morphology is obviously influenced by magnetic field and the effects were also systematically discussed.
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Jia, S., Song, T., Zhao, B., Zhang, Q., Zhai, Q., Gao, Y. (2015). Influence of Magnetic Field on Dealloying of Al-15Fe Ribbons and Formation of Fe3O4 Octahedra. In: TMS 2015 144th Annual Meeting & Exhibition. Springer, Cham. https://doi.org/10.1007/978-3-319-48127-2_31
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DOI: https://doi.org/10.1007/978-3-319-48127-2_31
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48608-6
Online ISBN: 978-3-319-48127-2
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