Nowadays, scientists and engineers are coming together enthusiastically to develop superior lightweight materials for tribological applications, such as hybrid aluminum metal matrix composites for the internal combustion engine components. In the present study, hybrid aluminum metal matrix composite has been fabricated with A390 (Al–Si) as the matrix material and SiC (15 wt%) and multiwalled carbon nanotube (0.5 wt%, 1.5 wt%, and 2.5 wt%) as hybrid reinforcements, by following the microwave sintering route (2.45 GHz, 900 W). Microstructure and porosity of fabricated hybrid aluminum metal matrix composite has been characterized using micrographs of the scanning electron microscope and optical microscope. This is followed by the Vickers hardness characterization and composition analysis by X-ray diffraction and Raman spectroscopy. Thereafter, a comprehensive tribological investigation is carried out for A390, Al + 15% SiC, Al + 15% SiC + 0.5% MWCNT, Al + 15% SiC + 1.5% MWCNT, and Al + 15% SiC + 2.5% MWCNT. The present study reveals that the addition of multiwalled carbon nanotube (MWCNT) in microwave sintered aluminum metal matrix composite has a significant effect on wear resistance and frictional response.

如今，科学家和工程师们热情地齐聚一堂，为摩擦学应用开发优质轻质材料，例如用于内燃机部件的混合铝金属基复合材料。在本研究中，混合铝金属基复合材料以 A390 (Al-Si) 为基体材料和 SiC (15 wt%) 和多壁碳纳米管 (0.5 wt%、1.5 wt% 和 2.5 wt%) 作为混合增强材料，遵循微波烧结路线（2.45 GHz，900 W）。使用扫描电子显微镜和光学显微镜的显微照片表征了制备的混合铝金属基复合材料的微观结构和孔隙率。然后是通过 X 射线衍射和拉曼光谱进行维氏硬度表征和成分分析。此后，对 A390、Al + 15% SiC、Al + 15% SiC + 0.5% MWCNT、Al + 15% SiC + 1.5% MWCNT 和 Al + 15% SiC + 2.5% MWCNT 进行了全面的摩擦学研究。目前的研究表明，在微波烧结铝金属基复合材料中添加多壁碳纳米管（MWCNT）对耐磨性和摩擦响应有显着影响。