铁钴纳米合金的制备及表征

Preparation and Characterization of Fe-Co Alloyed Nanoparticles

Fe-Co合金是重要的金属软磁材料,由于具有高饱和磁感应强度、低矫顽力、高磁导率和低磁各向异性常数等独特的软磁材料性能而倍受关注。本实验以水合肼为还原剂,PVP为分散剂,采用液相还原法制备出纳米Fe-Co合金,并利用X射线衍射仪(XRD)、扫描电镜(SEM)、差示扫描量仪(DSC)对样品进行了表征。研究结果表明:制得的样品为非晶态无定形;颗粒呈球形,平均粒径为57nm;Fe-Co合金的抗氧化能力较强,在常温下不易被氧化。最后对Fe-Co纳米金属材料的发展趋势进行了展望,同时指出了Fe-Co纳米金属材料制备方法研究中存在的问题。

Fe-Co alloys are important soft magnetic materials of metal due to the high saturation magnetic induction, low co- ercivity, high permeability and low magnetic anisotropy constant, and other unique properties of soft magnetic materials and much attention. In this experiment, hydrazine hydrate as the reducing agent, PVP as a dispersant, was prepared by liquid phase reduction of Fe-Co alloy nanoparticles, and X-ray diffraction （XRD）, scanning electron microscopy （SEM） , differ- ential scanning meter （DSC） of samples were characterized. The results show that： for the amorphous samples prepared with no fixed line; Particles are spherical, average particle size is 30nm; Fe-Co alloy oxidation resistant and less suscepti- ble to oxidation at room temperature. Finally, Fe-Co on the development trend of nano metal material in the future, noting that the Fe-Co nano-metal materials in the preparation of a problem.