Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi’an Shaanxi 710072, P. R. China.
Received 8 September 2013
Revised 9 January 2014
Accepted 9 January 2014
Available online 17 January 2014
TiC nanowires with high surface areas were prepared by a carbothermal reduction.
The TiC nanowire/paraffin sample had good electromagnetic loss abilities in X-band.
The matching thickness was determined by the quarter-wavelength law and impedance match.
TiC nanowires were synthesized by chloride-assisted carbothermal reaction, using sucrose, TiO2 and NaCl as precursors and Ni(NO3)2·6H2O as a catalyst. The TiC nanowires have specific surface areas of 186.7 m2 g-1 with a diameter of 200-400 nm and length of dozens micrometers. The hybrids of TiC nanowires/paraffin exhibited distinct electromagnetic wave absorbing ability in X-band (8.2-12.4 GHz). The optimal reflection loss (RL) of -51 dB at 11.8 GHz and the bandwidth of 3.0 GHz (RL<-10 dB) was achieved when the thickness is 1.7 mm. The optimal reflection loss and matching thickness were determined by the impedance match and quarter-wavelength law.
The TiC nanowires with high specific surface areas were prepared by a chloride-assisted carbothermal reduction. The 30 wt% loaded sample shows strong EM wave absorption capability in X-band, due to the good impedance match degree and destructive interference at the air-material interface. TiC nanowires show a potential as a new-type of stealth materials.