한국분말재료학회지 (Journal of Powder Materials)

  • 제14권3호
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  • Pages.208-214
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  • 2007
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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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(W,Ti)C계 초경합급의 미세조직 및 경도에 미치는 금속 결합재 조성의 영향

Effect of Metallic Binder Composition on Microstructure and Hardness of (W,Ti)C Cemented Carbides

  • ;
  • 이경호 (한국과학기술원 신소재공학과) ;
  • 박희섭 (한국과학기술원 신소재공학과) ;
  • 장종준 (한국과학기술원 신소재공학과) ;
  • 홍순형 (한국과학기술원 신소재공학과)
  • Daoush, Walid M. (Department of Powder Technology, Central Metallurgical Research & Development Institute) ;
  • Lee, Kyong-H. (Dept. of Materials Science and Engineering, Korea Advanced Institute of Science and Technology) ;
  • Park, Hee-S. (Dept. of Materials Science and Engineering, Korea Advanced Institute of Science and Technology) ;
  • Jang, Jong-J. (Dept. of Materials Science and Engineering, Korea Advanced Institute of Science and Technology) ;
  • Hong, Soon-H. (Dept. of Materials Science and Engineering, Korea Advanced Institute of Science and Technology)
  • Published : 2007.06.28
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Abstract

The microstructure and hardness of (W,Ti)C cemented carbides with a different metallic binder composition of Ni and Co fabricated by powder technology were investigated. The densifications of the prepared materials were accomplished by using vacuum sintering at $1450^{\circ}C$. Nearly full dense (W,Ti)C cemented carbides were obtained with a relative density of up to 99.7% with 30 wt.% Co and 99.9% with 30 wt.% Ni as a metallic binder. The average grain size of the (W,Ti)C-Co and the (W,Ti)C-Ni was decreased by increasing the metallic binder content. The hardness of the dense (W,Ti)C-15 wt%Co and (W,Ti)C-15 wt%Ni, was greater than that of the other related cemented carbides; in addition, the cobalt-based cemented carbides had greater hardness values than the nickel-based cemented carbides.

Keywords

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