期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 509, 期 2, 页码 490-493出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2010.09.074
关键词
Dielectric response; Nanostructures
资金
- National Natural Science Foundation of China [50831006, 50701045]
- Ministry of Science and Technology China [2010CB934603]
Microwave frequency (2-18 GHz) dielectric response has been investigated in the carbon-coated cubic TiC nanoparticles embedded in paraffin matrix with different weight fractions. DC conductivity measurements showed that the TiC nanocubes/paraffin composites have a percolation threshold of about 30 wt%. Absorption property was found to be improved with increasing mass ratio in the present system, up to a mass ratio of 50 wt%. Reflection loss exceeding -20 dB in the frequency range of 6-16 GHz, with layer thicknesses from 2 to 4 mm, was found in the 50 wt% loaded sample. TiC nanocube/paraffin composite with a proper mass ratio can be very good prospective microwave absorption agent. (C) 2010 Elsevier B.V. All rights reserved.
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