Abstract
TiN nanoparticles with an average diameter of 15 nm or so were prepared by the reaction of spongy Ti and NH 4Cl at about 530 °C. The electromagnetic parameters of the TiN nanoparticles/wax composite were measured by a coaxial line method. The nanoparticles exhibit good microwave absorbing ability owing to dielectric loss, and the measured reflection loss reaches a minimum value of −16.1 dB at 13.8 GHz. The interfaces between nanocrystalline TiN and the thin amorphous TiO 2 layer on the TiN surface contribute dominantly to the high permittivity and good microwave absorbing properties.
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