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http://dx.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 (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)
Publication Information
Korean Journal of Materials Research / v.24, no.3, 2014 , pp. 159-165 More about this Journal
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.
Keywords
degree of alignment; thermal emissivity; graphite flakes; coating; magnetic field;
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Times Cited By KSCI : 3  (Citation Analysis)
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