Microwave absorption properties of CuO/Co/carbon fiber composites synthesized by thermal oxidation

This letter reported that the CuO/Co/carbon fiber (CuO/Co/CF) composites were synthesized by thermal oxidation Cu/Co/carbon fiber composites. The results of scanning electron microscope images indicated that the diameter of the CuO/Co/CF composites was about 10 mu m. The strongest reflectivity loss (RL) of the composites was further enhanced to -42.7 dB (microwave absorption rate >99.9%) at 10.8 GHz for a layer of 2.0 thickness, and the strong absorption (RL< -10 dB) was obtained between 8.72 and 18 GHz for the thickness of 1.3-2.2 mm. The CuO/Co/CF composites are believed to be ideal for making strong absorption microwave-absorbing materials. (C) 2010 Elsevier B.V. All rights reserved.