富勒烯烟灰增强铝基复合材料的摩擦学性能

Tribological Properties of Al-Based Composites Reinforced with Fullerene Soot.

作者信息

Yunusov Firuz, Larionova Tatiana V, Tolochko Oleg, Breki Alexander D

机构信息

Institute of Machinery, Materials and Transport, Peter the Great St. Petersburg Polytechnic University, 195251 Saint-Petersburg, Russia.

出版信息

Materials (Basel). 2021 Oct 27;14(21):6438. doi: 10.3390/ma14216438.

DOI:10.3390/ma14216438

PMID:34771966

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8585329/

Abstract

Aluminum-based composite materials reinforced with fullerene soot, which is a mixture of fullerene and amorphous carbon, are promising materials for friction and wear applications. Composite materials: aluminum with 2% fullerene soot (f.s) and Al with 2% f.s and 2% Cu were obtained via mechanical milling followed by hot pressing. The tribological properties (friction and wear) of the listed composites were investigated and compared with the results for pure aluminum obtained under similar conditions. It has been shown that the addition of fullerene soot reduces the friction coefficient by 25%. At additional alloying with copper, the friction coefficient decreased by 35% in comparison with pure aluminum and also lad to a decrease in friction fluctuations. The wear rate of composite Al with 2% f.s decreased twice in comparison with that of pure aluminum, and with additional alloying it decreased 2.5 times. The morphology of the wear surfaces was investigated by scanning electron microscopy (SEM). The influence of fullerene soot and additional alloying on the wear mechanism was shown.

摘要

以富勒烯烟灰增强的铝基复合材料是很有前景的摩擦磨损应用材料，富勒烯烟灰是富勒烯和无定形碳的混合物。通过机械研磨后热压获得了复合材料：含2%富勒烯烟灰（f.s）的铝以及含2% f.s和2%铜的铝。研究了所列复合材料的摩擦学性能（摩擦和磨损），并与在类似条件下获得的纯铝结果进行了比较。结果表明，添加富勒烯烟灰可使摩擦系数降低25%。与纯铝相比，在额外添加铜合金化后，摩擦系数降低了35%，并且摩擦波动也有所减小。含2% f.s的铝复合材料的磨损率与纯铝相比降低了一半，在额外合金化后降低了2.5倍。通过扫描电子显微镜（SEM）研究了磨损表面的形态。显示了富勒烯烟灰和额外合金化对磨损机制的影响。