Structural and mechanical properties of CeO2 reinforced Al matrix nanocomposites Structural and mechanical properties of CeO2 reinforced Al matrix nanocomposites
1Center for Advanced Materials, Qatar University, Doha, 2713, Qatar
2Department of Metallurgical and Materials Engineering, Suez University, Suez, 43721, Egypt
Adv. Mater. Lett., 2018, 9 (8), pp 602-605
Publication Date (Web): Jun 14, 2018
Copyright © IAAM-VBRI Press
In this study, Al-CeO2 nanocomposites containing various concentrations of reinforcement were fabricated by ball milling and microwave sintering process. A comparison of structural and mechanical properties of the developed nanocomposites is presented to elucidate the effect of reinforcement. Different characterizing tools such as X-ray diffractometer (XRD), field emission scanning electron microscope (FESEM), surface profilometrer, microhardness tester and universal compression testing machines were employed. XRD and SEM/EDX analyses reveal the presence and uniform distribution of CeO2 nanoparticles into the Al matrix. A significant increase in microhardness and compressive strength is noticed with increasing concentration of CeO2 nanoparticles due to a dispersion hardening effect of the reinforcement. Our study indicates that the concentration of reinforcement has a significant influence of the properties of Al-CeO2 nanocomposites. It is further noticed that Al-2.0 vol.% CeO2 nanocomposite demonstrates the best performance as compared to pure Al and other developed nanocomposites.
Aluminum, CeO2 nanoparticles, microwave sintering, surface profilometry, mechanical behavior.