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2021 Vol.31, Issue 11 Preview Page
Thermal Properties according to Content and Alignment of Carbon Fiber in Cu Matrix Composite Reinforced with Chopped Carbon Fiber

탄소 단섬유가 첨가된 Cu기지 복합재료의 섬유 분율 및 배열에 따른 열적 특성

Minkyoung Kim
,
Jun Hyun Han†
김 민경
,
한 준현†
Department of Materials Science and Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
충남대학교 신소재공학과
†Corresponding author E-Mail : jhhan@cnu.ac.kr (J. H. Han, Chungnam Nat‘l Univ.)
November 2021. pp. 626-634
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Abstract

Cu matrix composites reinforced with chopped carbon fiber (CF), which is cost effective and can be well dispersed, are fabricated using electroless plating and hot pressing, and the effects of content and alignment of CF on the thermal properties of CF/Cu composites are studied. Thermal conductivity of CF/Cu composite increases with CF content in the in-plane direction, but it decreases above 10% CF; this is due to reduction of thermal diffusivity related with phonon scattering by agglomeration of CF. The coefficient of thermal expansion decreases in the in-plane direction and increases in the through-plane direction as the CF content increases. This is because the coefficient of thermal expansion of the long axis of CF is smaller than that of the Cu matrix, and the coefficient of thermal expansion of its short axis is larger than that of the Cu matrix. The thermal conductivity is greatly influenced by the agglomeration of CF in the CF/Cu composite, whereas the coefficient of thermal expansion is more influenced by the alignment of CF than the aggregation of CF.

Keywords
carbon fiber/copper composite
chopped carbon fiber
thermal conductivity
coefficient of thermal expansion
electroless plating
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Information
  • Publisher :Materials Research Society of Korea
  • Publisher(Ko) :한국재료학회
  • Journal Title :Korean Journal of Materials Research
  • Journal Title(Ko) :한국재료학회지
  • Volume : 31
  • No :11
  • Pages :626-634
  • Received Date : 2021-09-29
  • Revised Date : 2021-10-19
  • Accepted Date : 2021-10-19
  • DOI :https://doi.org/10.3740/MRSK.2021.31.11.626
Journal Informaiton Korean Journal of Materials Research Korean Journal of Materials Research
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