Fast Sintering Soft Ferrite Materials at Low Temperature

The effects of Ei2O3-V2O5 on sinterability and magnetic properties were investigated. The results show that, the addition of Bi2O3-V2O5 can accelerate the grains growing. The morphology of the sample's section shows large grains increasing in direct ratio with amount of the addition. XRD patterns confirm that a small amount of unknown phases appear and the grain boundary becomes more thick with an increace of the amount of the additive. But, this addition of sintering aids can lower the sintering temperature to less than 875℃, and shorten soaking time to 30min for Ni-Cu-Zn ferrite. The permeability of the ferrite added 1wt% the sintering aids can reach to 195 at 10MHz.