Integrated manufacturing of REciclable multi-material COmposites for the TRANSport sector

This study demonstrates the possibility of enhancing the adhesion strength between two metal surfaces by growing 3D porous cobalt oxide nanoflakes on their porous surfaces. In addition, using nanoperfusion technology enables exceptional adhesion between aluminum substrates and epoxy matrices. The innovative approach enhances the mechanical performance and bond strength, providing new insights into advanced composite materials for structural applications.The developments in the automotive and aerospace sectors require alternative structures to metals for diverse applications; therefore, lightweight polymer–metal hybrid composites with outstanding mechanical characteristics are synthesized. Herein, the modern nanoperfusion technology, which involves the in situ growth of 3D porous cobalt oxide nanoflakes (Co3O4 NFs) on the porous aluminum surface, is used. A rough surface with corresponding surface porosities of 21, 48.1, and 49.8% can be produced by anodization of aluminum at 8, 10, and 12?V, respectively. The samples anodized at 10?V are selected as a structure for the growth of 3D Co3O4 NFs at different hydrothermal temperatures (90, 120, and 160?°C). The bond strength and modulus of the toughness of the sample combining aluminum and 3D Co3O4 NF growth at 120?°C exhibit a substantial bonding strength, reaching a value of 14.27?MPa and 3.56?kJ?m?3, respectively. The porous nature of the manufactured cobalt oxide nanoflakes allows the epoxy to penetrate, which enhances the bonding strength and thus improves the mechanical properties of the manufactured joints.

» Author: Mohan Raheem Abbas, Nabil Kadhim Taieh, Abdulmohsin Naji Almuhaisen, Xi Liu, Ying Li

» Publication Date: 13/01/2025

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