Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Effects of Graphite Shape and Composite Fabricating Method on Mechanical Properties of Graphite/Copper Composites

그라파이트/구리 복합재료의 기계적 특성에 미치는 그라파이트 형상과 복합재료 제조방법의 영향

  • Sohn, Youhan (Department of Materials Science and Engineering, Chungnam National University) ;
  • Han, Jun Hyun (Department of Materials Science and Engineering, Chungnam National University)
  • 손유한 (충남대학교 신소재공학과) ;
  • 한준현 (충남대학교 신소재공학과)
  • Received : 2018.09.17
  • Accepted : 2018.09.28
  • Published : 2018.10.27
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Abstract

To study the effects of graphite shape and the composite fabricating method on the mechanical properties of graphite/copper (Gr/Cu) composites, a copper composite using graphite flakes or graphite granules as reinforcing phases is fabricated using mechanical mixing or electroless plating method. The mechanical properties of the Gr/Cu composites are evaluated by compression tests, and the compressive strength and elongation of the Gr/Cu composites using graphite granules as a reinforcing phase are compared with those of Cu composites with graphite flakes as a reinforcing phase. The compressive yield strength or maximum strength of the Gr/Cu composites with graphite granules as a reinforcing phase is higher than that of the composites using graphite flakes as a reinforcing phase regardless of the alignment of graphite. The strength of the composite produced by the electroless plating method is higher than that of the composite material produced by the conventional mechanical mixing method regardless of the shape of the graphite. Using graphite granules as a reinforcing phase instead of graphite flakes improves the strength and elongation of the Gr/Cu composites in all directions, and reduces the difference in strength or elongation according to the direction.

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