Purpose

The aviation field requires a material with the ability to withstand severe environmental conditions. The purpose of this paper is to provide higher wear resistance and improve the lifetime of aircraft. Hence, it is vital to enhance the wear resistance and strength of the material.

Design/methodology/approach

In this investigation, the Az91D magnesium alloy was reinforced with lanthanum (La₂O₃) and cerium oxide (CeO₂) nanoparticles by stir casting and heat treatment process and the tribological and mechanical properties were analyzed.

Findings

The results showed the Az91D/CeO₂ composite exhibited higher density (1.96 g/cm3) and lower porosity (1.01%) compared to other materials due to the diffusion of CeO₂ nanoparticles in between the atoms of Az91D alloy. The hardness of Az91D/ CeO₂ & Az91D/ La₂O₃ was improved by 38% and 34%, respectively, compared to Az91D alloy owing to the reinforcing effect of hard nanoparticles. Further, the inclusion of nanoparticles decreased the mass loss and showed lower wear rate compared to the Az91D alloy due to the pinning effect of nanoparticles. In addition, the friction coefficient was observed in the order of Az91D > Az91D/ La₂O₃ > Az91D/ CeO₂. Moreover, the heat treatment displayed positive results on the properties of all the materials.

Originality/value

This work is original as the combination of cerium oxide nanoparticles with Az91D magnesium alloy is not tried by earlier investigators. Further, the comparative performance of both lanthanum and cerium oxide nanoparticles on the tribological and mechanical behavior of Az91D alloy has been analyzed for aviation application. This study will provide new information to the scientific world to increase the lifetime of aviation structures.

中文翻译：

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航空应用搅拌铸造纳米镧和纳米氧化铈强化Az91D镁合金的摩擦学和时效行为

目的

航空领域需要一种能够承受恶劣环境条件的材料。本文的目的是提供更高的耐磨性并提高飞机的使用寿命。因此，提高材料的耐磨性和强度至关重要。

设计/方法/方法

在这项研究中，通过搅拌铸造和热处理工艺用镧 (La ₂ O ₃ ) 和氧化铈 (CeO ₂ ) 纳米颗粒增强 Az91D 镁合金，并分析了摩擦学和机械性能。

发现

结果表明，由于 CeO ₂纳米颗粒在 Az91D 合金原子之间的扩散，Az91D/CeO ₂复合材料与其他材料相比表现出更高的密度 (1.96 g/cm3) 和更低的孔隙率 (1.01%) 。由于硬纳米粒子的增强作用，与Az91D合金相比，Az91D/ CeO ₂和Az91D/ La ₂ O ₃的硬度分别提高了38%和34%。此外，由于纳米粒子的钉扎效应，与 Az91D 合金相比，纳米粒子的包含减少了质量损失并显示出更低的磨损率。此外，观察摩擦系数的顺序为 Az91D > Az91D/ La ₂ O ₃  > Az91D/ CeO ₂. 此外，热处理对所有材料的性能都显示出积极的结果。

原创性/价值

这项工作是原创的，因为早期的研究人员没有尝试将氧化铈纳米颗粒与 Az91D 镁合金结合使用。此外，还分析了镧和氧化铈纳米粒子对 Az91D 合金摩擦学和机械行为的比较性能，以用于航空应用。这项研究将为科学界提供新信息，以延长航空结构的使用寿命。