材料科学
碳纳米管
扫描电子显微镜
摩擦学
复合材料
粉末冶金
微观结构
色散(光学)
铜
维氏硬度试验
复合数
透射电子显微镜
碳纳米管金属基复合材料
纳米管
冶金
纳米技术
光学
物理
作者
Adam Piasecki,Julia Sobkowiak,Dariusz Boroński,Katarzyna Siwińska-Ciesielczyk,Piotr Paczos
出处
期刊:Materials
[MDPI AG]
日期:2024-03-20
卷期号:17 (6): 1427-1427
摘要
This paper presents the results of research on the microstructure, mechanical, and tribological properties of Cu/0.5 wt.% MWCNT (multi-walled carbon nanotube) sintered composite materials produced by powder metallurgy. The purpose of this research was to investigate the impact of carbon nanotube modifications on the uniformity of their dispersion and the effectiveness of their bonding with the matrix. The MWCNTs were modified by chemical oxidation. Additionally, a modification of the ingredient mixing method utilizing ultrasonic frequencies was employed. The tests were carried out using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Vickers hardness tests, static compression tests, and wear tests using the pin-on-disc method. Furthermore, mechanical properties and strain distribution analyses of the micro-specimens were conducted using the Micro-Fatigue System (MFS). The implemented modifications had a positive effect on the dispersion of MWCNTs in the copper matrix and on the mechanical and tribological properties of the sinters.
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