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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Advances in Powder and Ceramic Materials Science
Presentation Title Enhancing Reinforcing Efficiency of Sic Particles in Aluminium Matrix Composites with Intercalated Oxygen Atoms
Author(s) Miran Joo, Donghyun Bae
On-Site Speaker (Planned) Miran Joo
Abstract Scope In metal matrix composites (MMCs), the interface between the metal matrix and reinforcement critically influences mechanical properties of MMCs because the load can transfer at the interface via the interfacial shear stress. We develop a new aluminium composite containing silicon carbide (SiC) nanoparticles dispersed in an interstitial aluminium alloy (called as I-Al) matrix where oxygen atoms are intercalated in the aluminium. SiC nanoparticles less than 60 nm in diameter are uniformly dispersed in the I-Al matrix via powder metallurgy. High-energy ball milling enables oxygen in the I-Al to be uniformly distributed in the composite powder. Oxygen are also observed at the interface of Al/SiC nanoparticles. Oxygen at the interface can provide additional chemical bonding other than the bonding at the interface of Al/SiC nanoparticles, improving interface bonding of the composites. Therefore, the reinforcing efficiency of composites containing the intercalated oxygen is enhanced.
Proceedings Inclusion? Planned:
Keywords Composites, Aluminum, Powder Materials

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