블록직선이송 방전연삭에 의한 미세전극 가공 및 그래핀 강화 알루미나 복합소재의 마이크로 홀 가공특성 = Fabrication of Micro-electrodes using Liner Block Moving Electrical Discharge Grinding and Characteristics of Micro-hole Machining of Graphene Nanoplatelet-reinforced Al₂O₃Composites

다국어 초록 (Multilingual Abstract)

Graphene nanoplatelet (GNP)-reinforced alumina (Al₂O₃) is a promising material for micro-partapplications, particularly micro-nozzle shapes, because of its excellent wearresistance. In this study, a Al₂O₃/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 Al₂O₃/15vol% GNP composite.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. Al₂O₃/GNP 복합소재 및 미세전극의 제조
• 3. 실험장치 및 방법
• 4. 실험결과 및 고찰
• 5. 결론
• REFERENCES

참고문헌 (Reference)

1 성진우, "탄소나노튜브와 그래핀 강화 하이브리드 알루미나 복합재료의 재료특성 및 마이크로방전가공 성능" 한국기계가공학회 12 (12): 3-9, 2013

2 강명창, "전도성을 가지는 탄소나노튜브강화 알루미나복합소재의 마이크로방전가공에서 초음파진동 부가에 의한 가공특성" 한국기계가공학회 13 (13): 119-126, 2014

3 류청원, "알루미늄 합금 6061에서 와이어 진동부가에 의한 와이어 컷 방전가공에 따른 표면 거칠기 특성 (I)" 한국기계가공학회 14 (14): 59-66, 2015

4 배준경, "새로운 디버링 공구를 이용한 드릴링 버의 효율적 제거를 위한 가공조건 선정" 한국기계가공학회 15 (15): 109-117, 2016

5 Moreland, M. A., "Versatile Performance of Ultrasonic Machining" 67 (67): 1045-1046, 1988

6 Kim, H. J., "Unoxidized Graphene/Alumina Nanocomposite:Fracutre-and Wear-Resistance Effects of Graphene on Alumina Matrix" 4 : 1-10, 2014

7 Neppiras, E. A., "Ultrasonic Machining- II. Operating Conditions and performance of Ultrasonic drills" 18 (18): 368-379, 1957

8 Gilmore R., "Ultrasonic Machining and Orbital Abrasion Techniques" SME 1-20, 1989

9 Moore D., "Ultrasonic Impact Grinding" 137-139, 1985

10 Paweł, R., "Thermal properties of pressure sintered alumina–graphene composites" 122 (122): 105-114, 2015

11 Govindaraajan B., "Spark plasma sintering of graphene reinforced zirconium diboride ultra-high temperature ceramic composites" 39 : 6637-6646, 2013

12 Porwal, H., "Review of graphene ceramic matrix composite" 112 (112): 443-454, 2013

13 Fan, Y., "Preparation and Electrical Properties of Graphene Nanosheet/Al2O3 Composites" 48 (48): 1743-1749, 2010

14 Liu, J., "Mechanical properties of graphene platelet-reinforced alumina ceramic composites" 39 : 6215-6221, 2013

15 Xia, H., "Mechanical and thermal properties of reduced graphene oxide reinforced aluminum nitride ceramic composites" 639 : 29-36, 2015

16 Cheong S. K., "Mechanical Behavior of Laminated Composites Using Scrim prepregs for Fishing Rods" 12 (12): 80-86, 1999

17 W. Koenig, "Machining of Fiber Reinforced Plastics" 34 (34): 537-548, 1985

18 Jeong, H. A., "Machining characteristics of micro electrode fabrication and aspect ratio variation for micro electrical discharge drilling of Al2O3/Graphene composite" Pusan National University 2017

19 이용철, "MLCC 적층용 진공척의 자기연마와 ELID연삭을 이용한 미세 버 제거" 한국기계가공학회 14 (14): 149-154, 2015

20 Kovalchenko, M. S., "Influence of properties of abrasive materials on the effectiveness of ultrasonic machining of ceramics" 25 (25): 560-562, 1986

21 Ramirez, C., "Graphene Nanoplatelet/Silicon Nitride Composites with High Electrical Conductivity" 50 (50): 3607-3615, 2012

22 Malick, P. K., "Fiber-Reinforced Composite" M. Dekker 20-40, 1988

23 성진우, "Effects of Graphene Nanoplatelet Contents on Material and Machining Properties of GNP-Dispersed Al2O3 Ceramics for Micro-Electric Discharge Machining" 한국정밀공학회 3 (3): 247-252, 2016

24 Hourmand, M., "Development of new fabrication and measurement techniques of micro-electrodes with high aspect ratio for micro EDM using typical EDM machine" 97 : 64-78, 2017

25 H. Yagishita, "Cutting Mechanism of Drilling CFRP Laminates and Effect of Ultrasonic Torsional Mode Vibration Cutting" 34 : 213-220, 2006

26 Çelika, Y., "Anisotropic mechanical and functional properties of graphene-based alumina matrix nanocomposites" 36 (36): 2075-2086, 2016