Simultaneous synthesis and consolidation of a nanocrystalline 17.14Fe 0.7Cr 0.2Al 0.1-Si 3N 4 composite by pulsed current activated heating

  • In Jin Shon*
  • , Song Lee Du
  • , In Yong Ko
  • , Chul Gyu Song
  • , Jung Mann Doh
  • , Jin Kook Yoon
  • , Sang Whan Park
  • *Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

Abstract

Nanopowders of Fe 3N, Cr, Si and Al powders were fabricated by high-energy ball milling. A high-density nanocrystalline 17.14Fe 0.7Cr 0.2Al 0.1-Si 0N 4 composite was simultaneously synthesized and consolidated by a pulsed current activated sintering (PCAS) method within two minutes from mechanically activated powders of Fe 3N, Cr, Si and Al. The advantage of this process is that it allows very quick densification to near theoretical density and prohibits grain growth in nano-structured materials. The hardness of the composite was about 430 kg/mm 2.

Original languageEnglish
Pages (from-to)71-75
Number of pages5
JournalJournal of Ceramic Processing Research
Volume13
Issue number1
StatePublished - 2012

Keywords

  • Composite materials
  • Hardness
  • Nanostructured materials
  • Sintering
  • Synthesis

Quacquarelli Symonds(QS) Subject Topics

  • Materials Science

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