TRIBOLOGICAL AND ELECTROCHEMICAL BEHAVIOR OF GRAPHENE, CNT, AND BN REINFORCED AA5083 ALUMINUM MATRIX COMPOSITES | ||
| Journal of the Egyptian Society of Tribology | ||
| Volume 22, Issue 3, July 2025, Pages 98-113 PDF (1.05 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jest.2025.398807.1124 | ||
| Authors | ||
| H. Hussein* 1; E. B. Moustafa2 | ||
| 1Mechanical and Mechatronics Engineering Department, Higher Technological Institute, Tenth of Ramadan City 44637. | ||
| 2Benha National University, EGYPT. | ||
| Abstract | ||
| This study investigates the influence of nano-scale reinforcements carbon nanotubes (CNTs), hexagonal boron nitride (h-BN), and graphene on the mechanical, tribological, and corrosion-resistant properties of AA5083 aluminum alloy composites. Single- and hybrid-reinforced composites were fabricated using Friction Stir Processing (FSP), and their performance was evaluated through microstructural analysis, microhardness testing, wear rate assessment, and electrochemical corrosion studies. Microstructural characterization revealed a uniform dispersion of reinforcements, particularly in hybrid combinations, resulting in significant grain refinement and enhanced mechanical properties. Among single-reinforced composites, graphene demonstrated the lowest wear rate (0.14 mm³/m) and corrosion rate (0.0127 mm/y), while BN showed the highest hardness improvement (78 HV). Hybrid composites exhibited superior performance due to synergistic effects between reinforcements. The AA5083/BN–G composite achieved the highest hardness (86 HV) and a 61% reduction in wear rate compared to the base alloy. Electrochemical analysis revealed that CNT and graphene significantly enhanced corrosion resistance, with CNT-reinforced composites exhibiting exceptional charge transfer resistance. | ||
| Keywords | ||
| Nano-reinforced composites; AA5083 aluminum alloy; wear resistance; corrosion behavior; hybrid metal matrix composites | ||
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