Interfacial reaction induced efficient load transfer in few-layer graphene reinforced Al matrix composites for high-performance conductor

Weiwei Zhou, Pavlina Mikulova, Yuchi Fan, Keiko Kikuchi, Naoyuki Nomura, Akira Kawasaki

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)93-99
Number of pages7
JournalComposites Part B: Engineering
Volume167
DOIs
Publication statusPublished - 2019 Jun 15

Keywords

  • Electrical conductivity
  • Graphene
  • Load transfer
  • Metal-matrix composites (MMCs)

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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