A powder-metallurgy-based strategy toward three-dimensional graphene-like network for reinforcing copper matrix composites.

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ID: 107329
2020
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Abstract
Three-dimensional graphene network is a promising structure for improving both the mechanical properties and functional capabilities of reinforced polymer and ceramic matrix composites. However, direct application in a metal matrix remains difficult due to the reason that wetting is usually unfavorable in the carbon/metal system. Here we report a powder-metallurgy based strategy to construct a three-dimensional continuous graphene network architecture in a copper matrix through thermal-stress-induced welding between graphene-like nanosheets grown on the surface of copper powders. The interpenetrating structural feature of the as-obtained composites not only promotes the interfacial shear stress to a high level and thus results in significantly enhanced load transfer strengthening and crack-bridging toughening simultaneously, but also constructs additional three-dimensional hyperchannels for electrical and thermal conductivity. Our approach offers a general way for manufacturing metal matrix composites with high overall performance.
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zhang2020anature Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Zhang, Xiang;Xu, Yixin;Wang, Miaocao;Liu, Enzuo;Zhao, Naiqin;Shi, Chunsheng;Lin, Dong;Zhu, Fulong;He, Chunnian;
Journal Nature communications
Year 2020
DOI
10.1038/s41467-020-16490-4
URL
Keywords
mechanical properties fatigue high strength steel weld joints

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