한국분말재료학회지 (Journal of Powder Materials)

  • 제16권5호
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  • Pages.310-315
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  • 2009
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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환원/침탄공정에 의한 TiC/Co 복합분말 합성

Synthesis of TiC/Co Composite Powder by the Carbothermal Reduction Process

  • Lee, Gil-Geun (Division of Materials Science and Engineering, College of Engineering, Pukyong National University) ;
  • Ha, Gook-Hyun (Korea Institute of Materials Science)
  • 발행 : 2009.10.28
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초록

Ultra-fine TiC/Co composite powder was synthesized by the carbothermal reduction process without wet chemical processing. The starting powder was prepared by milling of titanium dioxide and cobalt oxalate powders followed by subsequent calcination to have a target composition of TiC-15 wt.%Co. The prepared oxide powder was mixed again with carbon black, and this mixture was then heat-treated under flowing argon atmosphere. The changes in the phase, mass and particle size of the mixture during heat treatment were investigated using XRD, TG-DTA and SEM. The synthesized oxide powder after heat treatment at 700$^{\circ}C$ has a mixed phase of TiO$_2$ and CoTiO$_3$ phases. This composite oxide powder was carbothermally reduced to TiC/Co composite powder by the solid carbon. The synthesized TiC/Co composite powder at 1300$^{\circ}C$ for 9 hours has particle size of under about 0.4 $\mu$m.

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참고문헌

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