대한금속재료학회지 (Korean Journal of Metals and Materials)

  • 제50권4호
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  • Pages.310-315
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  • 2012
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  • 1738-8228(pISSN)
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  • 2288-8241(eISSN)
대한금속재료학회 (The Korean Institute of Metals and Materials)
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기계적 합성된 분말로부터 펄스전류활성 소결에 의한 나노구조 1.5TiAl-Al2O3 복합재료 제조 및 기계적 특성

Mechanical Properties and Fabrication of Nanostructured 1.5TiAl-Al2O3 Composite by Pulsed Current Activated Sintering

  • Kim, Won-Baek (Minerals and Materials Processing Division, Korea Institute of Geoscience, Mining and Materials Resources) ;
  • Wang, Hee-Ji (Division of Advanced Materials Engineering and the Research Center of Advanced Materials Development, Engineering College, Chonbuk National University) ;
  • Roh, Ki-Min (Minerals and Materials Processing Division, Korea Institute of Geoscience, Mining and Materials Resources) ;
  • Cho, Sung-Wook (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) ;
  • Shon, In-Jin (Division of Advanced Materials Engineering and the Research Center of Advanced Materials Development, Engineering College, Chonbuk National University)
  • 투고 : 2011.09.05
  • 발행 : 2012.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

Nano-powders of 1.5TiAl and $Al_2O_3$ were synthesized from $1.5TiO_2$ and 3Al powders by high energy ball milling. Nanocrystalline $Al_2O_3$ reinforced composite was consolidated by pulsed current activated sintering within 2 minutes from mechanochemically synthesized powders of $Al_2O_3$ and 1.5TiAl. The relative density of the composite was 99.5%. The average hardness and fracture toughness values obtained were $1250kg/mm^2$ and $10MPa{\cdot}m^{1/2}$, respectively.

키워드

과제정보

연구 과제번호 : 티타늄계 합금 스크랩의 불순물 제어 및 활용기술 개발

연구 과제 주관 기관 : 한국지질자원연구원, 한국에너지기술평가원(KETEP)

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