Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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Mechanical Behavior of Al/C60-fullerenes Nanocomposites

풀러렌이 분산된 알루미늄기지 나노복합재의 기계적 거동

  • 최현주 (국민대학교 신소재공학부)
  • Received : 2012.12.05
  • Accepted : 2013.02.04
  • Published : 2013.04.30
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Abstract

Aluminum-based composites containing $C_{60}$-fullerenes are produced by hot rolling of ball-milled powder. The grain size of aluminum is effectively reduced to ~100 nm during ball-milling processes, leading to grain refinement strengthening of the composite. Furthermore, $C_{60}$-fullerenes are gradually dispersed during ball-milling processes and hence the strength of the composite increases with the volume of $C_{60}$-fullerenes. The composite containing 10 vol% $C_{60}$-fullerenes with a grain size of ~ 100 nm exhibits ~1 GPa of compressive strength.

$C_{60}$ 풀러렌이 분산된 알루미늄기지 복합재를 볼 밀링법과 열간압연 공정을 이용하여 제조하였다. 볼 밀링이 진행되는 동안, 알루미늄기지는 그 결정립이 100 nm 이하 수준으로 미세화되어 강화되었다. 동시에 $C_{60}$ 풀러렌이 알루미늄기지 내에 균일하게 분산되어, $C_{60}$ 풀러렌의 첨가량이 증가할수록 복합재의 강도가 증가하였으며, 10 vol%의 $C_{60}$ 풀러렌을 포함하는 순 알루미늄기지 복합재는 1 GPa 수준의 압축 강도를 나타내었다.

Keywords

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