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ISSN : 1225-0562(Print)
ISSN : 2287-7258(Online)
Korean Journal of Materials Research Vol.24 No.3 pp.159-165
DOI : https://doi.org/10.3740/MRSK.2014.24.3.159

Relation between Thermal Emissivities and Alignment Degrees of Graphite Flakes Coated on an Aluminum Substrate

Kang, Dong Su, Lee, Sang Min, Kim, Suk Hwan, Lee, Sang Woo, Roh, Jae Seung

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˚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, R2, 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.

알루미늄 기판에 코팅된 흑연입자의 배향도 변화와 열방사율 변화의 관계

강동수, 이상민, 김석환, 이상우, 노재승

초록