Abstract

This study aims to improve tribological performance of magnesium alloy with the addition of carbonaceous (C-based) reinforcements. Synergetic effects of MWCNT and GNPs on wear performance of AZ91 magnesium alloy was evaluated with this report. AZ91-0.3 wt% MWCNT and AZ91-0.15 wt% MWCNT-0.15 wt% GNPs hybrid composites were synthesized using hot pressing via semi powder metallurgy. Microstructures were examined by scanning electron microscope and x-ray diffraction test devices then hardness and wear tests were performed for all samples. Results clearly show that hardness and wear behaviors of AZ91 magnesium alloy were improved significantly with the addition of reinforcements. Uniform distribution of carbon atoms was achieved for both of two samples. AZ91-0.15 wt% MWCNT-0.15 wt% GNPs composite showed best wear performance among the specimens.

Graphical Abstract

摘要

这项研究旨在通过添加碳质（C基）增强材料来改善镁合金的摩擦学性能。这份报告评估了MWCNT和GNP对AZ91镁合金磨损性能的协同作用。使用半粉末冶金通过热压合成了AZ91-0.3 wt％MWCNT和AZ91-0.15 wt％MWCNT-0.15 wt％GNPs杂化复合材料。通过扫描电子显微镜和X射线衍射测试装置检查微观结构，然后对所有样品进行硬度和磨损测试。结果清楚地表明，添加增强剂可以显着改善AZ91镁合金的硬度和磨损性能。对于两个样品，均实现了碳原子的均匀分布。AZ91-0.15 wt％MWCNT-0.15 wt％GNPs复合材料在样品中显示出最佳的磨损性能。

图形概要