Development of CIP/Graphite Composite Additives for Electromagnetic Wave Absorption Applications

다국어 초록 (Multilingual Abstract)

In this study, the electromagnetic (EM) wave absorption abilityof carbonyl iron powder (CIP)/graphite composites produced byball milling were studied in a range of 28.5 GHz to examine theeffects of the morphology and volume fraction of graphite onEM wave absorption ability. The results indicated that a ballmilling technique was effective in exfoliating the graphite andcovering it with CIP, thereby markedly increasing the specificsurface area of the hybrid powder. The increase in the surface area and hybridization with dielectric loss materials (i.e., graphite)improved EM absorbing properties of CIP in the range of S and X bands. Specifically, the CIP/graphite composite containing3 wt% graphite exhibited electromagnetic wave absorption of −13 dB at 7 GHz, −21 dB at 5.8 GHz, and −29 dB at 4.3 GHz after1 h, 8 h, and 16 h of milling, respectively.

참고문헌 (Reference)

1 Y. Tan, 326 : 41-, 2013

2 Y. Naito, 19 : 65-, 1971

3 J. Wei, 312 : 414-, 2007

4 S. S. Kim, 97 : 1-, 2005

5 F. S. Wen, 404 : 3567-, 2009

6 H. S. Cho, 201 : 1942-, 2004

7 X. Wang, 480 : 761-, 2009

8 X. Wang, 18 : 481-, 2007

9 K. M. Lin, 39 : 1836-, 2003

10 R. Han, 509 : 2734-, 2011

11 G. Tong, 509 : 451-, 2011

12 W. Meng, 321 : 3442-, 2009

13 X. Ni, 120 : 206-, 2010

14 G. Dodbiba, 320 : 1322-, 2008

15 R. B. Yang, 109 : 07A311-, 2011

16 L. Kong, 73 : 185-, 2014

17 D. Sun, 61 : 5829-, 2013

18 L. Kong, 117 : 19701-, 2013

19 L. Kong, 41 : 4906-, 2015

20 Pritom J Bora, "Lightweight Polyaniline-Cobalt Coated Fly Ash Cenosphere Composite Film for Electromagnetic Interference Shielding" 대한금속·재료학회 12 (12): 603-609, 2016

21 임준희, "Dual-Band Microwave Absorption Properties of Metamaterial Absorber Composed of Split Ring Resonator on Carbonyl Iron Powder Composites" 대한금속·재료학회 11 (11): 447-451, 2015