低损耗 ZrO2 @CIPs核壳型软磁复合粉体制备及磁感应性能研究.

The surface modification of carbonyl iron powders（CIPs） was carried out by using zirconium butoxide（TBOZ） solution. Zirconium dioxide coated carbonyl iron powders（ZrO2@CIPs） composites with different zirconium content were synthesized by adjusting the amount of TBOZ. The static magnetic properties and insulating properties of CIPs and ZrO2@CIPs composites have been investigated, and it has been shown that ZrO2 can effectively suppress the deterioration of the static magnetic property of CIPs when the temperature is increased to 200 ℃. Meantime, the resistivity of ZrO2@CIPs composites has been greatly improved. Comparing the magnetic loss capacity of CIPs and ZrO2@CIPs composites, it can be found that the magnetic loss capacity and DC bias properties of ZrO2@CIPs composites are improved with increasing the amount of TBOZ. When the amount of TBOZ is 15.57 mL, the μ″ of ZrO2@CIPs composites is only 0.05, quality factor is 116.7, and the rated current is 17.10 A. In addition, compared with CIPs（-0.91 V）, the corrosion potential of ZrO2@CIPs composites is increased to-0.33 V, demonstrating the enhanced corrosion resistance. In general, the results of this work can be served as a reference for the modification of conventional CIPs in the inductance domain.  [ABSTRACT FROM AUTHOR]