Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Synthesis and Characterization of $Cr_3C_2$ for Plasma-arc Deposit by Combustion Synthesis Process

연소합성법에 의한 Plasma-arc Deposit 용 $Cr_3C_2$ 합성 및 특성에 관한 연구

  • 장윤식 (부산대학교 무기재료공학과) ;
  • 윤정아 (부산대학교 무기재료공학과) ;
  • 이윤복 (부산대학교 무기재료공학과) ;
  • 박성수 (부산대학교 무기재료공학과) ;
  • 김인술 (포항산업과학연구원) ;
  • 박흥채 (부산대학교 무기재료공학과) ;
  • 오기동 (부산대학교 무기재료공학과)
  • Published : 1996.11.01
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Abstract

Using Cr2O3 Al and graphite powders as starting materials Cr3C2 was synthesized by combustion synthesis process according to the following reaction : 3Cr3C2 +4C+6Allongrightarrow2Cr3C2 +3Al2O3. The synthesis was conducted at 2 atm in an argon atmosphere. in this study main-product was monolithic phase of Cr3C2 /Cr7C3 mixture and sub-product was slag state of $\alpha$-Al2O3. Single phase of Cr3C2 was obtained when crushed main-product was heat-treated at 120$0^{\circ}C$ for 3h in vacuum state with addition of 2.5wt% C. The obtained Cr3C2 powder can be used as plasma-arc deposit material because the flowability index of powder with the size of 9-50${\mu}{\textrm}{m}$ was 66.

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