Abstract
Nanoparticles of metal and other materials are a proved reinforcing material for producing a high-performance aluminum composite utilized in modern engineering applications. In the present work, two different hybrid composites were fabricated and compared based on mechanical performance and physical properties. The aluminum hybrid nanocomposites were fabricated using powder metallurgy technique with 1 vol% constant content of Multi-Wall Carbon Nano Tubes (MWCNTs) and different volume fraction 0, 1, 2, 3, and 4 vol% of Micro-copper and Nano-silver particles. To ensure goodness of preparation, the hybrid nanocomposites were characterized using Field Emission Scanning Electron Microscope (FESEM), Energy-Dispersive x-ray (EDX) analyses, and elemental mapping analysis. An enhancement in microhardness and diametral compressive strength was observed with improving the reinforcement content. On studying mechanical properties, the wear behaviour of hybrid nanocomposites was studied against a constant distance of 1810 m and different normal loads of 5, 10, 15 and 20 N. Upon examination of wear map and compared to several literatures, it is observed that, during dry sliding wear, a decrease in the wear rate continues by adding more reinforcement particles up to 2 vol% Nano-Ag and up to 3 vol% Micro-Cu then increased, and the wear rate for all hybrid nanocomposites content have increased with increasing normal load. In conclusion, the results revealed that the hybrid nanocomposites with Micro-Cu particles showed better mechanical performance from Nano-Ag particles. In addition, it was confirmed that the Micro-Cu composite can be applied in various applications if the nanoparticles was networked enough with the Micro-Cu.
Published Version
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