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논문 기본 정보

자료유형
학술저널
저자정보
오성문 (School of Materials and Systems Engineering, Kumoh National Institute of Technology) 강동수 (School of Materials and Systems Engineering, Kumoh National Institute of Technology) 이상민 (School of Materials and Systems Engineering, Kumoh National Institute of Technology) 백운경 (School of Materials and Systems Engineering, Kumoh National Institute of Technology) 노재승 (School of Materials and Systems Engineering, Kumoh National Institute of Technology)
저널정보
한국전력공사 KEPCO Journal on electric power and energy KEPCO Journal on electric power and energy 제1권 제1호
발행연도
2015.1
수록면
15 - 20 (6page)

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To examine the magnetic shielding effect for carbon-based materials at extremely low frequencies (60 Hz), two types of carbon black (Super-P and Denka Black) and a natural graphite (HC-198) were mixed into organic binder at 10 wt.% to produce a coating solution, and a powder coating with varying thickness was applied on an aluminum disk measuring 88 mm in radius. A device was developed to measure the sheielding effect at extremely low frequencies. A closed circuit was achieved by connecting a transformer and a resistor. The applied voltage was fixed at 65 V, and the magnetic field was measured to being the range of 4.95~5.10 mG. Depending on the thickness of the coating layer, the magnetic field showed a decreasing trend. The maximum decrease in the magnetic field of 38.3% was measured when natural graphite was coated with specimens averaging $455{\mu}m$. This study confirmed that carbon-based materials enable magnetic shielding at extremely low frequencies, and that the magnetic shielding effect can be enhanced by varying the coating thickness.

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