Nd含量对高Zr含量纳米双相Nd_xFe_(90.5-x)Zr_(3.0)B_(6.5)合金微结构和磁性能的影响

Effect of Nd Content on Magnetic Properties and Microstructure of Nd_xFe_(90.5-x)Zr_(3.0)B_(6.5_)Nanocomposite Magnets with the Big Zr Content

采用电弧炉快淬和晶化退火工艺制备高性能NdxFe90.5-xZr3.0B6.5（F8．5=11．5）快淬磁体。结果表明，Zr的添加显著提高磁体的磁性能，Nd含量可以明显提高磁体的磁性能，X由8．5增加到10．5时，NdxFe90.5-xZr3.0B6.5磁体的磁能积由75kJ／m^3升高到114kJ／m^3，接近于美国Magnequench公司的MQP-B磁粉性能。

High performance NdxFe90.5-xZr3.0B6.5（x=8.5-11.5） ribbons were produced by arc melt spinning and then annealing. It is found that a proper amount of Nd addition can obviously optimize the magnetic properties of the samples. The energy product of NdxFe90.5-xZr3.0B6.5 ribbons is increased from 75 kJ/m^3 for x=8.5 to 114 kJ/m^3 for x=10.5 which is closed to that of America MQP-B magnets. In addition, it can be seen that Zr dopants can significantly improve the magnetic properties of the ribbons.