알루미늄 기판에 코팅된 흑연입자의 배향도 변화와 열방사율 변화의 관계

초록

This study is research on the thermal emissivity depending on the alignment degrees of graphite flakes. Sampleswere manufactured by a slurry of natural graphite flakes with organic binder and subsequent dip-coating on an aluminumsubstrate. 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 imagecamera at 100 oC. The alignment degrees were 0.04, 0.11, and 0.17 and the applied magnetic field strengths were 0, 1, and3 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.

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