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<p>In the present paper, the FeAlBSn nano-composite was synthesized using powder metallurgy technique in order to investigate the effect of milling time on its structural and magnetic properties. Comprehensive characterization was conducted using X-ray diffraction (XRD), scanning electron microscopy (SEM) coupled with energy-dispersive X-ray spectrometry (EDS), and vibrating sample magnetometry (VSM). XRD analysis of the initial powder (0&#xa0;h) revealed distinct peaks that correspond to the elements Fe, Al, B, and Sn. Upon 20&#xa0;h of milling, progressive solid-state reactions and structural transformations led to the formation of multiple intermetallic phases, including FeB, Fe<sub>2</sub>B, FeAl, AlB<sub>2</sub>, AlB<sub>12</sub>, FeSn, Fe<sub>2</sub>Sn<sub>2</sub>, Fe<sub>2</sub>Sn, and Fe<sub>2</sub>AlB<sub>2</sub>. The average crystallite size decreased from 54 to 13&#xa0;nm, accompanied by an increase in lattice strain from 0.08% to 0.6%. SEM–EDS analysis confirmed significant morphological refinement and uniform elemental distribution, with the mean particle size reducing from ~ 40&#xa0;µm to ~ 10&#xa0;µm after milling. In addition, Magnetic measurements revealed a significant dependence on milling time, with coercivity (Hc), remanent magnetization (Mr), and squareness ratio (Mr/Ms) reached 220.74&#xa0;Oe, 1.66&#xa0;emu/g, and 0.15, respectively, after 20&#xa0;h. However, saturation magnetization (Ms) decreased considerably from 103.28&#xa0;emu/g (0&#xa0;h) to 11.16&#xa0;emu/g (20&#xa0;h), indicating the formation of weakly magnetic or non-magnetic intermetallic phases. These findings highlight the impact of mechanical milling on tailoring the structural and magnetic properties of FeAlBSn nanocomposite for advanced applications.</p>

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Structural and magnetic behaviour of FeAlBSn nanocomposite synthesized via powder metallurgy process

  • 期刊论文

  • 发表日期：

    2025年7月6日

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  • Abderrahmane Younes,
  • Abdessabour Benamor,
  • Abderahim Abada,
  • Rachid Amraoui

摘要

In the present paper, the FeAlBSn nano-composite was synthesized using powder metallurgy technique in order to investigate the effect of milling time on its structural and magnetic properties. Comprehensive characterization was conducted using X-ray diffraction (XRD), scanning electron microscopy (SEM) coupled with energy-dispersive X-ray spectrometry (EDS), and vibrating sample magnetometry (VSM). XRD analysis of the initial powder (0 h) revealed distinct peaks that correspond to the elements Fe, Al, B, and Sn. Upon 20 h of milling, progressive solid-state reactions and structural transformations led to the formation of multiple intermetallic phases, including FeB, Fe2B, FeAl, AlB2, AlB12, FeSn, Fe2Sn2, Fe2Sn, and Fe2AlB2. The average crystallite size decreased from 54 to 13 nm, accompanied by an increase in lattice strain from 0.08% to 0.6%. SEM–EDS analysis confirmed significant morphological refinement and uniform elemental distribution, with the mean particle size reducing from ~ 40 µm to ~ 10 µm after milling. In addition, Magnetic measurements revealed a significant dependence on milling time, with coercivity (Hc), remanent magnetization (Mr), and squareness ratio (Mr/Ms) reached 220.74 Oe, 1.66 emu/g, and 0.15, respectively, after 20 h. However, saturation magnetization (Ms) decreased considerably from 103.28 emu/g (0 h) to 11.16 emu/g (20 h), indicating the formation of weakly magnetic or non-magnetic intermetallic phases. These findings highlight the impact of mechanical milling on tailoring the structural and magnetic properties of FeAlBSn nanocomposite for advanced applications.