Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Fabrication of Fe-TiB2 Composite Powder by High-Energy Milling and Subsequent Reaction Synthesis

  • Khoa, H.X. (School of Materials Science and Engineering, University of Ulsan) ;
  • Tuan, N.Q. (School of Materials Science and Engineering, University of Ulsan) ;
  • Lee, Y.H. (School of Materials Science and Engineering, University of Ulsan) ;
  • Lee, B.H. (School of Materials Science and Engineering, University of Ulsan) ;
  • Viet, N.H. (School of Materials Science and Engineering, Hanoi University of Science and Technology) ;
  • Kim, J.S. (School of Materials Science and Engineering, University of Ulsan)
  • Received : 2013.06.11
  • Accepted : 2013.06.24
  • Published : 2013.06.28
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Abstract

$TiB_2$-reinforced iron matrix composite (Fe-$TiB_2$) powder was in-situ fabricated from titanium hydride ($TiH_2$) and iron boride (FeB) powders by the mechanical activation and a subsequent reaction. Phase formation of the composite powder was identified by X-ray diffraction (XRD). The morphology and phase composition were observed and measured by field emission-scanning electron microscopy (FE-SEM) and energy-dispersive X-ray spectroscopy (EDS), respectively. The results showed that $TiB_2$ particles formed in nanoscale were uniformly distributed in Fe matrix. $Fe_2B$ phase existed due to an incomplete reaction of Ti and FeB. Effect of milling process and synthesis temperature on the formation of composite were discussed.

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