Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Property Evaluation of Tungsten-Carbide Hard Materials as a Function of Binder

소결조제 변화에 따른 텅스텐카바이드 소결체 특성평가

  • Kim, Ju-Hun (Korea Institute of Industrial Technology (KITECH), EV Components Materials) ;
  • Oh, Ik-Hyun (Korea Institute of Industrial Technology (KITECH), EV Components Materials) ;
  • Lee, Jeong-Han (Korea Institute of Industrial Technology (KITECH), EV Components Materials) ;
  • Hong, Sung-Kil (Division of Advanced Materials Engineering, Chonnam National University) ;
  • Park, Hyun-Kuk (Korea Institute of Industrial Technology (KITECH), EV Components Materials)
  • 김주훈 (한국생산기술연구원 EV부품소재그룹) ;
  • 오익현 (한국생산기술연구원 EV부품소재그룹) ;
  • 이정한 (한국생산기술연구원 EV부품소재그룹) ;
  • 홍성길 (전남대학교 신소재공학과) ;
  • 박현국 (한국생산기술연구원 EV부품소재그룹)
  • Received : 2019.04.19
  • Accepted : 2019.04.26
  • Published : 2019.04.28
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Abstract

Tungsten carbide (WC) hard materials are used in various industries and possess a superior hardness compared to other hard materials. They have particularly high melting points, high strength, and abrasion resistance. Accordingly, tungsten carbide hard materials are used for wear-resistant tools, cutting tools, machining tools, and other tooling materials. In this study, the WC-5wt.%Co, Fe, Ni hard materials are densified using the horizontal ball milled WC-Co, WC-Fe, and WC-Ni powders by a spark plasma sintering process. The WC-5Co, WC-5Fe, and WC-5Ni hard materials are almost completely densified with a relative density of up to 99.6% after simultaneous application of a pressure of 60 MPa and an electric current for about 15 min without any significant change in the grain size. The average grain size of WC-5Co, WC-5Fe, and WC-5Ni that was produced through SPS was about 0.421, 0.779, and $0.429{\mu}m$, respectively. The hardness and fracture toughness of the dense WC-5Co, WC-5Fe, WC-5Ni hard materials were also investigated.

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References

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