Spark plasma sintering behavior of pure aluminum depending on various sintering temperatures

Hansang Kwon, Dae Hoon Park, Yongha Park, Jean François Silvain, Akira Kawasaki, Yongho Park

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

We have successfully fabricated high-density pure aluminum (Al) bulk by means of a spark-plasma-sintering (SPS) process. The relative density of Al was enhanced as the sintering temperature of the SPS process increased. During the SPS process for pure Al power, the Al oxide layer on the surface of the Al particle was partially broken by the microplasma and applied pressure. The microstructures of the spark-plasma-sintered compacts obtained at various temperatures were observed by optical microscopy, field-emission scanning electron microscopy, and high-resolution transmission electron microscopy. We believe that the pinning effect, rapid heating cycle, and applied pressure played an important role in restraining the particle growth despite the increase in sintering temperature. It is feasible that the employed SPS process could be very useful to achieve fully densified Al compact.

Original languageEnglish
Pages (from-to)71-75
Number of pages5
JournalMetals and Materials International
Volume16
Issue number1
DOIs
Publication statusPublished - 2010 Feb 1

Keywords

  • Metals
  • Scanning electron microscopy (SEM)
  • Sintering
  • Spark plasma sintering (SPS)

ASJC Scopus subject areas

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

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