Effects of processing parameters on the fabrication of in-situ Al/TiC composites by thermally activated combustion reaction process in an aluminium melt using Al-TiO 2-C powder mixtures

Hwa Jung Kim, Jung Moo Lee, Young Hee Cho, Jong Jin Kim, Su Hyeon Kim, Jae Chul Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A feasible way to fabricate in-situ Al/TiC composites was investigated. An elemental mixture of Al-TiO 2-C pellet was directly added into an Al melt at 800-920°C to form TiC by self-combustion reaction. The addition of CuO initiates the self-combustion reaction to form TiC in 1-2 μm at the melt temperature above 850°C. Besides the CuO addition, a diluent element of excess Al plays a significant role in the TiC formation by forming a precursor phase, Al 3Ti Processing parameters such as CuO content, the amount of excess Al and the melt temperature, have affected the combustion reaction and formation of TiC, and their influences on the microstructures of in-situ Al/TiC composites are examined.

Original languageEnglish
Pages (from-to)677-684
Number of pages8
JournalJournal of Korean Institute of Metals and Materials
Volume50
Issue number9
DOIs
Publication statusPublished - 2012 Sep

Keywords

  • Casting
  • Composites
  • Self-propagating synthesis
  • TiC
  • X-ray diffraction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Modelling and Simulation
  • Surfaces, Coatings and Films
  • Metals and Alloys

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