In this study, a chemical reduction synthesis method of iron aluminum (FeAl) nano-dimensional intermetallic powders is described. The process has two stages: a salt reduction and solvent evaporation by a heat treatment at 1100°C. The precursors of the synthesis are ferric chloride, aluminum foil chips, a mix of Toluene/THF in a 75/25 volume relationship, and concentrated hydrochloric acid as initiator of the reaction. The reaction time was 20 days, the product obtained was dried at 60 °C for 2 h and calcined at 400, 800, and 1100 °C for 4 h each. To characterize and confirm the obtained synthesis products, X-Ray Diffraction (XRD), and Scanning Electron Microscopy (SEM) techniques were used. The results of morphology and chemical characterization of nano-dimensional powders obtained showed a formation of agglomerated particles of a size range of approximately 150 nm to 1.0 µm. Composition of powders was identified as corundum (Al2O3), iron aluminide (FeAl3), and iron-aluminum oxides (Fe0.53Al0.47)2O3 phases. The oxide phases formation were associated with the reaction of atmospheric concentrationfree oxygen during synthesis and sintering steps, reducing the concentration of the iron aluminum phase.
CITATION STYLE
Zurita-Méndez, N. N., Carbajal-De la Torre, G., Ballesteros-Almanza, L., Villagómez-Galindo, M., Sánchez-Castillo, A., & Espinosa-Medina, M. A. (2016). Chemical reduction synthesis of iron aluminum powders. In Characterization of Metals and Alloys (pp. 241–249). Springer International Publishing. https://doi.org/10.1007/978-3-319-31694-9_20
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