Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Rapid Sintering of Nanostuctured Tungsten Carbide by High-Frequency Induction Heating and its Mechanical Properties

고주파유도 가열에 의한 나노구조의 텅스텐 카바이드 급속소결과 기계적 성질

  • Kang, Hyun-Su (Division of Advanced Materials Engineering and Research Center for Advanced Materials Development, Engineering College, Chonbuk National University) ;
  • Doh, Jung-Mann (Advanced Functional Materials Research Center, Korea Institute of Science and Technology) ;
  • Hong, Kyung-Tae (Advanced Functional Materials Research Center, Korea Institute of Science and Technology) ;
  • Ko, In-Yong (Division of Advanced Materials Engineering and Research Center for Advanced Materials Development, Engineering College, Chonbuk National University) ;
  • Shon, In-Jin (Division of Advanced Materials Engineering and Research Center for Advanced Materials Development, Engineering College, Chonbuk National University)
  • 강현수 (전북대학교 신소재공학부 신소재 개발 연구센터) ;
  • 도정만 (한국과학 기술 연구원 기능재료센타) ;
  • 홍경태 (한국과학 기술 연구원 기능재료센타) ;
  • 고인용 (전북대학교 신소재공학부 신소재 개발 연구센터) ;
  • 손인진 (전북대학교 신소재공학부 신소재 개발 연구센터)
  • Received : 2010.09.06
  • Published : 2010.11.25
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Abstract

Extremely dense WC with a relative density of up to 99% was obtained within five minutes under a pressure of 80 MPa using the High-Frequency Induction Heated Sintering method. The average grain size of the WC was about 71 nm. The advantage of this process is not only rapid densification to obtain a neartheoretical density but also the prohibition of grain growth in nano-structured materials. The hardness and fracture toughness of the dense WC produced by HFIHS were $2660kg{\cdot}mm^{-2}$ and $7.2MPa{\cdot}m^{1/2}$, respectively.

Keywords

Acknowledgement

Supported by : 한국과학기술연구원

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