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DOI

Bulk copper, copper-graphene and copper-graphite composites were produced from copper-thermally expanded graphite (TEG) powder mixtures with 0-3 wt.% TEG contents via modified powder metallurgy process that includes powder milling in a planetary mill at 350 rpm for 5 hours, compaction, and vacuum annealing at 1030 °C for 1 hour. Phase composition and microstructure of the composites were analysed by XRD and SEM techniques. According to Raman spectroscopy, TEG transforms into a few layer graphene flakes in case of composites with 0.1-1 wt.% of carbon additive, while for 3 wt.% of carbon additive it remains in the form of graphite. The addition of 0.1 wt.% TEG results in the tensile strength increase up to 160 MPa (from 93 MPa for pure copper specimen synthesized via the similar synthesis route). Vickers hardness obtained for Specimens under the study is independent from the composite composition.

Original languageEnglish
Pages (from-to)151-157
JournalReviews on Advanced Materials Science
Volume57
Issue number2
Early online date28 Mar 2019
DOIs
StatePublished - 12 Sep 2019

    Scopus subject areas

  • Condensed Matter Physics
  • Materials Science(all)

    Research areas

  • MATRIX COMPOSITES, STRENGTH

ID: 39006844