Iron aluminide FeAl nanostructures were synthesized by chemical reduction of iron(II) chloride via aluminum nanoparticles in the solid state. Aluminum nanoparticles (AlNPs) were prepared by a novel wire drawing method in the presence of lubricating oil. Chemical reduction of iron(II) salts in aqueous solution by metallic aluminum has a many mechanistic considerations. These mechanistic aspects were available by understanding the mechanism of electron transfer reactions between metal complexes. Here the mechanochemical reaction between aluminum nanoparticles and crystalline iron(II) chloride occurred by inner sphere electron transfer mechanism. The products were characterized by IR, UV–Vis, XRD, FESEM, and VSM. The weight fraction of iron aluminide nanoparticles calculated by the Rietveld method. Quantitative XRD analysis show a weight fraction of FeAl 87% and unreacted metallic aluminum 13% respectively. The magnetic parameters of sample are obtained from the hysteresis loop and show a magnetic saturation (M = 135.223 emu g) and coercivity (H = 125.362 Oc) respectively. Polyaniline was synthesized by a mechanochemical reaction between aniline hydrochloride and potassium peroxydisulfate. Finally, ferromagnetic PANI/FeAl nanocomposite was prepared by the milling method in solid-state. The weight fractions of FeAl, Al and PANI in nanocomposite were calculated 3.30, 1.20 and 95.50% respectively. The electrical resistivity was measured by 4 Point Probe and found is equal to be 20 Ohm for polyaniline and 470 Ohm in the nanocomposite.

中文翻译：

---

铁磁性Fe3Al纳米颗粒的新型机械化学合成及其聚苯胺纳米复合材料的制备

铝化铁 FeAl 纳米结构是通过固态铝纳米粒子化学还原氯化铁 (II) 来合成的。在润滑油存在下通过新颖的拉丝方法制备了纳米铝（AlNP）。用金属铝化学还原水溶液中的铁(II)盐有许多机械方面的考虑。通过了解金属配合物之间的电子转移反应机制，可以获得这些机械方面的知识。这里，铝纳米粒子和结晶氯化铁(II)之间的机械化学反应通过内球电子转移机制发生。通过 IR、UV-Vis、XRD、FESEM 和 VSM 对产物进行了表征。采用Rietveld法计算的铝化铁纳米粒子的重量分数。定量 XRD 分析显示 FeAl 的重量分数分别为 87% 和未反应的金属铝 13%。样品的磁参数由磁滞回线获得，分别显示磁饱和（M = 135.223 emu g）和矫顽力（H = 125.362 Oc）。聚苯胺是通过苯胺盐酸盐和过二硫酸钾之间的机械化学反应合成的。最后采用固相球磨法制备了铁磁PANI/FeAl纳米复合材料。计算得出纳米复合材料中FeAl、Al和PANI的重量分数分别为3.30、1.20和95.50%。通过4点探针测量电阻率，发现聚苯胺的电阻率等于20欧姆，纳米复合材料的电阻率等于470欧姆。