Journal
COMPOSITES PART B-ENGINEERING
Volume 167, Issue -, Pages 93-99Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2018.12.018
Keywords
Metal-matrix composites (MMCs); Graphene; Load transfer; Electrical conductivity
Funding
- National Key RAMP
- D Program of China [2017YFB0703200]
- National Natural Science Foundation of China [51702045]
- Natural Science Foundation of Shanghai [17ZR1400900]
- Pujiang Talent Program [17PJ1400200]
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Fabricating high-strength Al matrix composites without sacrificing their electrical conductivity is a critical issue in the design of Al-based conductors. Here, we demonstrate for the first time, an example of improving the interfacial load transfer and strength of few-layer graphene (FLG)/Al composites by an appropriate interfacial reaction. Monocrystalline Al4C3 nanorods that tightly conjoined the FLG platelets with the Al matrix were produced by manipulating the sintering temperature. As revealed by transmission electron microscopy and by a shear lag model that provides a quantitative estimate of the strengthening, the Al4C3 nanorods ensured an efficient load transfer at the FLG-Al interface, thereby giving rise to a considerable enhancement of strength in the composite. Moreover, the electrical conductivity is almost as high as that of pure Al, which could be a significant step toward the preparation of high-performance Al-based conductors.
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