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http://dx.doi.org/10.4150/KPMI.2013.20.3.221

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)
Publication Information
Journal of Powder Materials / v.20, no.3, 2013 , pp. 221-227 More about this Journal
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.
Keywords
Fe-$TiB_2$ composite; Mechanical activation; Solid state reaction; Heat treatment;
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