Preparation and electromagnetic absorbing properties of TiC/Ni powders

Preparation and electromagnetic absorbing properties of TiC/Ni powders

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In order to improve the microwave absorption performance of TiC powder, TiC/Ni composite powder was prepared by coating nickel particles with mass fraction of 10%, 20% and 30% on the surface of TiC by iphone xr price calgary typical coarsening and sensitizing electroless nickel plating process.The composite powder was characterized by SEM and XRD, and the effect of nickel content on the microwave absorbing properties of TiC/Ni composite powder was analyzed.The results shows that the dielectric constant and permeability of TiC/Ni powder increases with the increase of nickel mass fraction.

With -5 dB as the scale, the absorption bandwidth of the sample with a thickness of 3.0 mm increases from 0 to 3.34 GHz.

When the thickness is 3.8 mm, the minimum reflection loss of TiC is -3.66 dB.

For TiC/Ni samples with a thickness of 2.8 mm and here a mass fraction of Ni of 30%, the minimum reflection loss value of -9.95 dB is obtained at 9.

67 GHz.It can be seen that electroless nickel plating can improve the microwave absorption performance of TiC.