Fabrication of carbon nanofiber reinforced aluminum alloy nanocomposites by a liquid process

Se Il Oh, Jun Young Lim, Yu Chan Kim, Juil Yoon, Gyeung Ho Kim, Joonho Lee, Yun Mo Sung, Jun Hyun Han

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Carbon nanofiber (CNF) reinforced aluminum alloy nanocomposites were fabricated by a liquid process. In order to enhance the wettability of Al on CNFs and the dispersion of CNFs in the Al melt, and suppress the formation of the brittle Al 4C 3 phase, Cu was coated on CNFs using electroless plating. CNFs were also vibration-milled to enhance the dispersion of the CNFs by reducing the aspect ratio of the CNFs. The Cu-coated CNFs could be easily accommodated into the Al melt by using button-shaped feedstocks that were made of CNFs and Al powder. The concentration of CNFs in the CNF/Al nanocomposites was varied from 0.065 to 0.58 wt.%. Our results indicate that CNF/Al nanocomposites with significantly improved mechanical properties could be fabricated by a liquid process and that CNFs acted as an effective reinforcement material.

Original languageEnglish
Pages (from-to)111-117
Number of pages7
JournalJournal of Alloys and Compounds
Volume542
DOIs
Publication statusPublished - 2012 Nov 25

Keywords

  • Carbon nanofiber
  • Casting
  • Mechanical properties
  • Metal-matrix composites (MMCs)
  • Wettability

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

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