Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Fabrication and Mechanical Properties of a Nanostructured TiN-AlN Composite by Pulsed Current Activated Sintering

펄스전류활성 소결에 의한 나노구조 TiN-AlN 복합재료 제조 및 기계적 특성

  • Kim, Wonbaek (Minerals and Materials Processing Division, Korea Institute of Geoscience, Mining and Materials Resources) ;
  • Suh, Chang-Yul (Minerals and Materials Processing Division, Korea Institute of Geoscience, Mining and Materials Resources) ;
  • Roh, Ki-Min (Minerals and Materials Processing Division, Korea Institute of Geoscience, Mining and Materials Resources) ;
  • Lim, Jae-Won (Minerals and Materials Processing Division, Korea Institute of Geoscience, Mining and Materials Resources) ;
  • Shim, Hyun-Bo (Division of Advanced Materials Engineering and the Research Center of Advanced Materials Development, Engineering College, Chonbuk National University) ;
  • Park, Hyun-Kuk (Division of Advanced Materials Engineering and the Research Center of Advanced Materials Development, Engineering College, Chonbuk National University) ;
  • Shon, In-Jin (Division of Advanced Materials Engineering and the Research Center of Advanced Materials Development, Engineering College, Chonbuk National University)
  • 김원백 (한국지질자원연구원) ;
  • 서창열 (한국지질자원연구원) ;
  • 노기민 (한국지질자원연구원) ;
  • 임재원 (한국지질자원연구원) ;
  • 심현보 (전북대학교 신소재공학부 신소재개발연구센터) ;
  • 박현국 (전북대학교 신소재공학부 신소재개발연구센터) ;
  • 손인진 (전북대학교 신소재공학부 신소재개발연구센터)
  • Received : 2012.03.29
  • Published : 2012.11.25
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Abstract

A dense nanostructured TiN-AlN composite was prepared from high-energy ball milled TiN-AlN mixture powders by pulsed current activated sintering (PCAS). A highly dense TiN-AlN bulk composite was obtained within 2 minutes at $1500^{\circ}C$ with the simultaneous application of 80 MPa pressure and pulsed current. The fine crystalline structure of the TiN-AlN mixture, which was obtained by high-energy milling, was effectively maintained during PCAS and resulted in the enhancement of the mechanical properties. The micro hardness and fracture toughness of TiN-AlN composite were $1780kg/mm^2$ and $5MPa.m^{1/2}$, respectively. The mechanical properties were higher than monolithic AlN or TiN.

Keywords

Acknowledgement

Grant : 티타늄계 합금 스크랩의 불순물 제어 및 활용기술 개발

Supported by : 한국에너지기술평가원(KETEP)

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