Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Material properties and machining performance of CNT and Graphene reinforced hybrid alumina composites for micro electrical discharge machining

탄소나노튜브와 그래핀 강화 하이브리드 알루미나 복합재료의 재료특성 및 마이크로방전가공 성능

  • Sung, Jin-Woo (Pusan National Univ., Graduate School of Convergence Science) ;
  • Kim, Nam-Kyung (Gyeongnam National Univ., of Science and Technology) ;
  • Kang, Myung-Chang (Pusan National Univ., Graduate School of Convergence Science)
  • 성진우 (부산대학교 융합학부) ;
  • 김남경 (경남과학기술대학교 자동차공학과) ;
  • 강명창 (부산대학교 융합학부)
  • Received : 2013.12.09
  • Accepted : 2013.12.23
  • Published : 2013.12.31
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Abstract

Aluminum Oxide($Al_2O_3$) ceramics are excellent candidates for such applications due to their outstanding mechanical, thermal, and tribological properties. However, they are difficult to machine using conventional mechanical methods. Carbon fillers, such as carbon nanotubes(CNT) and graphene nanoplatelets(GNP)can be dispersed in a ceramic matrix to improve the mechanical and electrical properties. In this study, CNT and Graphene reinforced hybrid ceramic composites were fabricated using the spark plasma sintering method at a temperature of $1,500^{\circ}C$, pressure of 40 MPa, and soaking time of 10min. Besides this, the material properties such as microstructure, crystal structure, hardness, and electrical conductivity were analyzed using FE-SEM, XRD, Vickers, and the 4-point probe method. A micro machining test was carried out to compare the effects of the material properties and the machining performance for CNT and Graphene reinforced ceramic composites.

Keywords

References

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