Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Relation between Thermal Emissivities and Alignment Degrees of Graphite Flakes Coated on an Aluminum Substrate

알루미늄 기판에 코팅된 흑연입자의 배향도 변화와 열방사율 변화의 관계

  • Kang, Dong Su (School of Advanced Materials and Systems Engineering, Kumoh National Institute of Technology) ;
  • Lee, Sang Min (School of Advanced Materials and Systems Engineering, Kumoh National Institute of Technology) ;
  • Kim, Suk Hwan (School of Advanced Materials and Systems Engineering, Kumoh National Institute of Technology) ;
  • Lee, Sang Woo (School of Advanced Materials and Systems Engineering, Kumoh National Institute of Technology) ;
  • Roh, Jae Seung (School of Advanced Materials and Systems Engineering, Kumoh National Institute of Technology)
  • 강동수 (금오공과대학교 신소재시스템공학부) ;
  • 이상민 (금오공과대학교 신소재시스템공학부) ;
  • 김석환 (금오공과대학교 신소재시스템공학부) ;
  • 이상우 (금오공과대학교 신소재시스템공학부) ;
  • 노재승 (금오공과대학교 신소재시스템공학부)
  • Received : 2014.03.03
  • Accepted : 2014.03.18
  • Published : 2014.03.27
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Abstract

This study is research on the thermal emissivity depending on the alignment degrees of graphite flakes. Samples were manufactured by a slurry of natural graphite flakes with organic binder and subsequent dip-coating on an aluminum substrate. The alignment degrees were controlled by applying magnetic field strength (0, 1, and 3 kG) to the coated samples. The alignment degree of the sample was measured by XRD. The thermal emissivity was measured by an infrared thermal image camera at $100^{\circ}C$. The alignment degrees were 0.04, 0.11, and 0.17 and the applied magnetic field strengths were 0, 1, and 3 kG, respectively. The thermal emissivities were 0.829, 0.837, and 0.844 and the applying magnetic field strengths were 0, 1, and 3 kG, respectively. In this study the correlation coefficient, $R^2$, between thermal emissivity and alignment degree was 0.997. Therefore, it was concluded that the thermal emissivities are correlated with the alignment degree of the graphite flakes.

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References

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