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

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Fabrication of Micro-electrodes using Liner Block Moving Electrical Discharge Grinding and Characteristics of Micro-hole Machining of Graphene Nanoplatelet-reinforced Al2O3Composites

블록직선이송 방전연삭에 의한 미세전극 가공 및 그래핀 강화 알루미나 복합소재의 마이크로 홀 가공특성

  • Jeong, Hyeon-A (Graduate School of Convergence Science, Pusan National University) ;
  • Lee, Chang Hoon (Industrial Liaison Innovation Center, Pusan National University) ;
  • Kang, Myung Chang (Graduate School of Convergence Science, Pusan National University)
  • 정현아 (부산대학교 융합학부) ;
  • 이창훈 (부산대학교 부품소재산학협력연구소) ;
  • 강명창 (부산대학교 융합학부)
  • Received : 2016.12.07
  • Accepted : 2017.02.13
  • Published : 2017.02.28
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Abstract

Graphene nanoplatelet (GNP)-reinforced alumina ($Al_2O_3$) is a promising material for micro-partapplications, particularly micro-nozzle shapes, because of its excellent wearresistance. In this study, a $Al_2O_3$/GNPcomposite with 15 vol% graphene nanoplatelets (GNP) was highly densified and fabricated via spark plasma sintering for micro-electrical discharge drilling (Micro-ED drilling) and the wear resistance property of the composite is evaluated via the ball-on-disk method. In addition, the diameter and shape of the micro-electrodes machined by wire electrical discharge grinding (WEDG), block electrical discharge grinding (BEDG), and new linear block moving electrical discharge grinding (LBMEDG) methods are systematically compared and analyzed to observe the micro-hole machining in the micro-ED drilling of the $Al_2O_3$/15vol% GNP composite.

Keywords

References

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