Nanocrystal magnetic core and preparation method and application thereof

The invention belongs to the technical field of alloy smelting, and particularly relates to a nanocrystalline magnetic core and a preparation method and application thereof. The invention provides a nanocrystalline magnetic core. The nanocrystalline magnetic core is prepared from, by weight, 1.5%-2.5% of Cu, 5%-8% of Si, 1%-1.5% of Mn, 1.5%-3.5% of V, 3%-3.5% of Mo, 1.5%-4% of Al and the balance Fe. The nanocrystalline magnetic core provided by the invention has high magnetic conductivity and low coercive force, and is more suitable for being applied to medium-high frequency transformers. 本发明属于合金冶炼技术领域，具体涉及一种纳米晶磁芯及其制备方法和应用。本发明提供了一种纳米晶磁芯，包括如下重量百分比计的成分制成：Cu 1.5-2.5％、Si 5-8％、Mn 1-1.5％、V 1.5-3.5％、Mo 3-3.5％、Al 1.5-4％，余量为Fe。本发明提供的纳米晶磁芯具有高的磁导率和低的矫顽力，更合适用于在中高频变压器中进行应用。