In this paper, Al-based composites reinforced by Alumina and Al–Ni intermetallic compounds have been successfully fabricated by mechanical alloying technique. The intermetallic phase, i.e., NiAl, NiAl₃, Ni₂Al₃, as well as Alumina, were formed in the aluminum matrix by in situ solid-state reactions between pure Al and NiO powders. The effects of NiO content (7–10–13 vol%) on the characteristics of the fabricated composites were examined, the hardness, wear properties, phase constituent, and composite microstructure with different NiO content in particular. The results showed that the addition of NiO to Al increases the formation of Al–Ni system intermetallic compounds and enhance the surface hardness. Further, it is ascertained that Al–10 vol% NiO nanocomposite has better wear properties in comparison with samples with 7 and 13 vol% NiO due to the better matrix integrity and reinforcement distribution in the Al matrix.

中文翻译：

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机械合金化从Al-NiO体系原位合成铝基复合材料

在本文中，通过机械合金化技术成功地制造了由氧化铝和Al-Ni金属间化合物增强的Al基复合材料。金属间相，即NiAl，NiAl ₃，Ni ₂ Al ₃通过纯Al和NiO粉末之间的原位固态反应，在铝基体中形成了Al2O3和Al2O3。研究了NiO含量（7–10–13 vol％）对所制备复合材料特性的影响，特别是不同NiO含量的硬度，耐磨性能，相组成和复合材料的微观结构。结果表明，向Al中添加NiO可以增加Al-Ni系金属间化合物的形成并提高表面硬度。此外，可以确定的是，与具有7％和13％（体积）NiO的样品相比，Al-10％（体积）NiO纳米复合材料具有更好的磨损性能，这归因于Al基质中更好的基质完整性和增强分布。