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논문 기본 정보

자료유형
학술저널
저자정보
Lili Chen (Harbin Institute of Technology) Yushi Qi (Harbin Institute of Technology) Yanhan Fei (Harbin Institute of Technology) Zhiming Du (Harbin Institute of Technology)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.10
발행연도
2021.10
수록면
4,263 - 4,270 (8page)
DOI
10.1007/s12540-020-00803-9

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초록· 키워드

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In order to significantly enhance the performance of graphene in metal matrix composites, in situ SiC nanorods were successfullyfabricated to enhance graphene nanoplatelets (GNPs)-reinforced Al2024 composite, which was prepared by powdersemi-solid processing and friction stir processing. The SiC?GNPs dispersed in the Al matrix uniformly, SiC nanorodswere randomly grown on GNPs sheets in any direction, bridging GNPs as well as GNPs and the Al matrix. Meanwhile, theinterfacial bonding was effective. The hybrid reinforcement of SiC and GNPs endowed composites with superior mechanicalproperties and thermal conductivity. The in situ SiC nanorods transfer phonons and reduce phonon scattering effect inthe through-plane direction of GNPs, which conducive to heat transmission. The composite exhibits improved mechanicalproperties, maximum tensile strength and hardness of 589 MPa and 193 HV are obtained, with 1.0 wt% GNPs addition,respectively. The thermal conductivity of composite increases with the content of SiC?GNPs. When the content of SiC?GNPsreaches 1.5 wt%, the composite has significantly enhanced thermal conductivity (224 W m?1 K?1), which is 115% timeshigher than that of Al2024. Moreover, the effects of SiC?GNPs on the properties were discussed.

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