Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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The Densification Properties of Distaloy AE-TiC Cermet by Spark Plasma Sintering

방전 플라즈마 소결에 의한 Distaloy AE-TiC 써멧의 치밀화 특성

  • Cho, Ho-Jung (Division of Advanced Materials Science & Engineering & ERI Gyeongsang National University) ;
  • Ahn, In-Shup (Division of Advanced Materials Science & Engineering & ERI Gyeongsang National University) ;
  • Lee, Young-Hee (Advance material research center Kaya AMA Inc.) ;
  • Park, Dong-Kyu (Advance material research center Kaya AMA Inc.)
  • Published : 2007.08.28
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Abstract

The fabrication of Fe alloy-40 wt.%TiC composite materials using spark plasma sintering process after ball-milling was studied. Raw powders to fabricate Fe alloy-TiC composite were Fe alloy, $TiH_{2}$ and activated carbon. Fe alloy powder was Distaloy AE (4%Ni-1%Cu-0.5%Mo-0.01%C-bal.%Fe) made by Hoeganes company with better toughness and lower melting point. These powders were ball-milled in horizontal attrition ball mill at a ball-to-powder weight ratio of 30 : 1. After that, these mixture powders were sintered by using spark plasma sintering apparatus for 5 min at $1200-1275^{\circ}C$ in vacuum atmosphere under $10^{-3}$ torr. DistaloyAE-40 wt.%TiC composite was directly synthesized by dehydrogenation and carburization reaction during sintering process. The phase transformation of as-milled powders and sintered materials was confirmed using X-ray diffraction (XRD) and transmission electron microscope (TEM). The density and harness materials was measured in order to confirm the densification behavior. In case of DistaloyAE-40 wt.%TiC composite retained for 5 min at $1275^{\circ}C$, it has the relative density of about 96% through the influence of rapid densification and fine TiC particle reinforced Fe-based composites materials.

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