纳米复合（NdDy）2（FeNb）14B/α-Fe永磁合金

(NdDy)2(FeNb)14B/α-Fe Nanocomposite Permanent Alloys

    摘要
  • 摘要: 采用单辊急冷法并晶化退火制备了高剩磁、高矫顽力和高磁能积的(NdDy)2(FeNb)14B/α-Fe纳米复合永磁合金,其最佳磁性能分别为Br=1.02 T,Hci=702 KA/m,(BH)max=134 KJ/m3.合金的组织结构由硬磁相(NdDy)2(FeNb)14B和软磁相α-Fe在纳米级范围内复合而成.两相的平均晶粒尺寸为30nm.该种合金优异的磁性能起源于纳米晶硬磁相和软磁相之间的磁交换耦合作用.

     

    Abstract: High coercivity, high remanence, and high energy product (NdDy)2(FeNb)14B/α-Fe nanocrystalline alloys are prepared by melt spining and subsequent annealing. The best properties of remanence (Br), coercivity (Hci) and maximum energy product ((BH)max) are 1.02 T, 702 kA/m and 134 kJ/m3, respectively. The microstructure of the two phase nanocomposite consists of hard magnetic (NdDy)2(FeNb)14B and soft magnetic α-Fe with an average size of 30 nm. These small dimensions allow effective exchange coupling between hard and soft magnetic grains and result in the simultaneous enhancement of Br,Hci and (BH)max.

     

    • HTML全文
    • 参考文献(0)
    • 相关文章
    • 施引文献
  • 资源附件(0)

/

返回文章
返回