Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Simultaneous Synthesis and Rapid Consolidation of Nanostructured (Ti,Mo)C and Its Mechanical Properties

펄스전류 가열에 의한 나노구조의 (Ti,Mo)C 합성과 동시 급속소결 및 기계적 성질

  • Jo, Hyoung-Gon (Division of Advanced Materials Engineering and Center for advanced bioimaging research, Engineering College, Chonbuk National University) ;
  • Kwon, Hanjung (Minerals and Materials Processing Division, Korea Institute of Geoscience, Mining and Materials Resources) ;
  • Shon, In-Jin (Division of Advanced Materials Engineering and Center for advanced bioimaging research, Engineering College, Chonbuk National University)
  • 조형곤 (전북대학교 신소재공학부 차세대 바이오 이미징 연구센터) ;
  • 권한중 (한국지질자원 연구원) ;
  • 손인진 (전북대학교 신소재공학부 차세대 바이오 이미징 연구센터)
  • Received : 2013.09.30
  • Accepted : 2013.10.17
  • Published : 2013.11.27
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Abstract

Nanocrystalline materials have recently received significant attention in the area of advanced materials engineering due to their improved physical and mechanical properties. A solid-solution nanocrystalline powder, (Ti,Mo)C, was prepared via high-energy milling of Ti-Mo alloys with graphite. Using XRD data, the synthesis process was investigated in terms of the phase evolution. Rapid sintering of nanostuctured (Ti,Mo)C hard materials was performed using a pulsed current activated sintering process (PCAS). This process allows quick densification to near theoretical density and inhibits grain growth. A dense, nanostructured (Ti,Mo)C hard material with a relative density of up to 96 % was produced by simultaneous application of 80 MPa and a pulsed current for 2 min. The average grain size of the (Ti,Mo)C was lower than 150 nm. The hardness and fracture toughness of the dense (Ti,Mo)C produced by PCAS were also evaluated. The fracture toughness of the (Ti,Mo)C was higher than that of TiC.

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References

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