Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Fabrication and Wear Behavior of Nano-sized Metal Particle Dispersed Al2O3 Nanocomposites

나노크기 금속입자가 분산된 Al2O3 나노복합재료의 제조 및 마모거동

  • Oh Sung-Tag (Department of Materials Science and Engineering, Seoul National University of Technology) ;
  • Yoon Se-Joong (Department of Materials Science and Engineering, Seoul National University of Technology) ;
  • Jeong Young-Keun (Nano Materials Laboratory, Korea Institute of Ceramic Engineering and Technology)
  • 오승탁 (서울산업대학교 신소재공학과) ;
  • 윤세중 (서울산업대학교 신소재공학과) ;
  • 정영근 (요업기술원 나노소재팀)
  • Published : 2005.08.01
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Abstract

Microstructure and wear behavior of A1203-based nanocomposites with Cu and Ni-Co dispersions were investigated. $Al_2O_3/Cu$ and $Al_2O_3/Ni-Co$ nanocomposites were fabricated by hydrogen reduction and sintering method using metal oxide and metal nitrates. The nanocomposites showed increased mechanical properties compared with monolithic $Al_2O_3$. In particular, high toughness and hardness were measured for the $Al_2O_3/Ni-Co$ nanocomposite consolidated by spark plasma sintering. A minimum value of wear coefficient comparable to the monolithic $Al_2O_3$ was obtained for $Al_2O_3/Ni-Co$ nanocomposite. Wear behavior is discussed in terms of microstructure and mechanical properties of nanocomposites

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References

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