Fabrication of single crystalline diamond reinforced aluminum matrix composite by powder metallurgy route

Hansang Kwon, Marc Leparoux, Jean Marc Heintz, Jean François Silvain, Akira Kawasaki

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

We have successfully fabricated highly densified aluminum (Al)-diamond composite materials by a simple hot press method. The thermal conductivity of the Al-diamond composite materials was measured. These materials had different types, sizes and fractions of diamond. These obtained values were discussed based on theoretically calculated values. The thermal conductivity of the composite materials, measured by Laser- Flash method, was found to have slightly increased compared to that of pure bulk Al. The obtained microstructures of the composite materials showed a lot of cleavage existing in the interface between the Al matrix and the diamond particles, which led to the low increment of the thermal conductivity. Moreover, Al-diamond bulk materials with different sintering temperatures in solid state, liquid phase, and transient region between solid and liquid of Al, have been synthesized.

Original languageEnglish
Pages (from-to)755-763
Number of pages9
JournalMetals and Materials International
Volume17
Issue number5
DOIs
Publication statusPublished - 2011 Oct 1

Keywords

  • Composites
  • Powder processing
  • Sintering
  • Thermal conductivity

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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