Abstract
The CF@Fe composites were prepared by depositing precusor Fe(CO)5 on carbon fiber (CF) to form continuous α-Fe film through metal organic chemical vapor deposition (MOCVD) process. The X-ray diffraction (XRD), scanning electron microscope (SEM) and a vector network analyzer were used to characterize the structure and electromagnetic properties of the powder and to study absorbing properties, The results showed that the film layer deposited on the surface of carbon fibers was pure α-Fe phase, at about 0.7 μm in thickness. After being deposited by consecutive α-Fe film, the CF electromagnetic properties changed significantly with the absorbing capacity being improved. By using electromagnetic parameters of the coaxial ring samples, the reflectance curves of the CF and CF@Fe coating at thickness of 2 mm were calculated, The curves showed that absorption peak of the samples deposited by the consecutive α-Fe film moved to the high frequency, the value of the minimum reflection peak reduced, and the bandwidth (less than −10 dB) increased 4.2 GHz.
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