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

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.

journal_name

Nat Commun

journal_title

Nature communications

authors

Zhang X,Xu Y,Wang M,Liu E,Zhao N,Shi C,Lin D,Zhu F,He C

doi

10.1038/s41467-020-16490-4

subject

Has Abstract

pub_date

2020-06-02 00:00:00

pages

2775

issue

1

issn

2041-1723

pii

10.1038/s41467-020-16490-4

journal_volume

11

pub_type

杂志文章

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