Effects Of Additions Of TiO2 Powder On The Electromagnetic Wave Absorbing Properties Of Fe-Based Nanocrystalline P/M Sheets

摘要

Fe-based nanocrystalline powder sheets mixed with TiO2 additives have been studied to improve the characteristics of electromagnetic wave absorber The Fe-based flake powderscrystallized at 550°C for 1 h were mixed with a nano-sized and a micro-sized TiO2 powders using ball mill, and then tape-cast with binder. Absorbing properties of the fabricated sheet samples, including the complex permittivity and permeability, were measured by network analyzer. Consequently, as the amount of high dielectric IiO2 powder increased, the properties of electromagnetic wave absorption was improved due to the increase of dielectric loss.