利用铝和铁废料可持续生产金属间纳米复合材料，具有优异的摩擦机械和热性能，适用于工业应用。

Sustainable production of intermetallic nanocomposites from aluminum and iron scarp, with excellent tribo-mechanical and thermal properties for industrial applications.

作者信息

Youness Rasha A, Taha Mohammed A

机构信息

Spectroscopy Department, National Research Centre, El Buhouth St, Dokki, Giza, 12622, Egypt.

Solid State Physics Department, National Research Centre, El Buhouth St, Dokki, Giza, 12622, Egypt.

出版信息

Sci Rep. 2025 Sep 12;15(1):32441. doi: 10.1038/s41598-025-17118-7.

DOI:10.1038/s41598-025-17118-7

PMID:40940362

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12432155/

Abstract

The goal of this research is to convert iron (Fe) and aluminum (Al) waste from metal workshops, as well as silicon (Si), into innovative intermetallic nanocomposites with different characteristics that are reinforced with various quantities of hybrid fly ash and vanadium carbide (VC) for industrial usage. The microstructure, physical integrity, tribo-mechanical performance, and thermal behavior of the resultant sintered materials were all carefully examined. FeSi, FeAl, Fe₃Si, and Fe₃Al₂Si₃ were among the intermetallic phases that were formed, according to post-milling XRD examination. The bulk density of the intermetallic alloy steadily dropped as the amount of hybrid ceramic reinforcements rose, although the apparent porosity in the sintered microstructure increased. Notably, as compared to the unreinforced intermetallic alloy, the microhardness increased by 8.11%, 23.62%, 47.10%, and 84.26% in quick succession when these reinforcements were added. In comparison to the intermetallic alloy, the sample containing 16 vol% of hybrid reinforcements (FV8) achieved a Young's modulus of 84.1% and a compressive strength of 43.2% after the addition of reinforcements. The CTE value of the intermetallic alloy was 11.88 × 10/ ⁰C, whereas the nanocomposite samples FV1, FV2, FV4 and FV8 have values of 11.28 × 10, 10.61 × 10, 9.14 × 10, and 7.10 × 10/ ⁰C, respectively, which can be attributed to vanadium and silica, which have lower CTE values than the matrix. Moreover, the previous results are associated with improved tribological properties of the prepared nanocomposites, as their wear rate decreased by 4.6%, 10.9%, 22.8%, and 43.2% compared to the intermetallic alloy. The average fraction coefficient decreased by 5.3%, 11.9%, 22.4%, and 39.5% for the same samples. Based on the results, recycled materials can be used in industrial applications, reinforcing the importance of recycling metal waste.

摘要

本研究的目标是将金属加工车间产生的铁（Fe）和铝（Al）废料以及硅（Si）转化为具有不同特性的创新金属间纳米复合材料，这些材料用不同数量的混合粉煤灰和碳化钒（VC）增强，用于工业用途。对所得烧结材料的微观结构、物理完整性、摩擦力学性能和热行为进行了仔细研究。根据研磨后的XRD检测，形成的金属间相包括FeSi、FeAl、Fe₃Si和Fe₃Al₂Si₃。随着混合陶瓷增强剂数量的增加，金属间合金的体积密度稳步下降，而烧结微观结构中的表观孔隙率增加。值得注意的是，与未增强的金属间合金相比，添加这些增强剂后，显微硬度依次提高了8.11%、23.62%、47.10%和84.26%。与金属间合金相比，添加16体积%混合增强剂（FV8）的样品在增强后杨氏模量达到84.1%，抗压强度达到43.2%。金属间合金的CTE值为11.88×10⁻⁶/℃，而纳米复合材料样品FV1、FV2、FV4和FV8的值分别为11.28×10⁻⁶、10.61×10⁻⁶、9.14×10⁻⁶和7.10×10⁻⁶/℃，这可归因于钒和二氧化硅，它们的CTE值低于基体。此外，先前的结果与所制备纳米复合材料摩擦学性能的改善有关，因为与金属间合金相比，它们的磨损率分别降低了4.6%、10.9%、22.8%和43.2%。相同样品的平均摩擦系数分别降低了5.3%、11.9%、22.4%和39.5%。基于这些结果，回收材料可用于工业应用，强化了回收金属废料的重要性。