The preparation and dielectrical properties of Fe-Si-B/resin composite

In this paper,resin was used as matrix to prepare epoxy resin matrix composite and phenolic resin matrix composite,in which the content of amorphous Fe-Si-B powder vary 20wt% to 80wt%.The phase characterization,microstructure and dielectric properties of the composite were analyzed by XRD,SEM and impedance analyzer.The result suggested that both the dielectric constant and conductivity of the samples raised with the increase of the conductive phase,moreover,the conductivity showed a exponential relationship with frequency.The reactance decreased with the increase of frequency,and took a negative value over the testing frequency range which indicated a capacitive character.