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采用快淬及热处理工艺，通过复合添加Dy和Ga，制备了高磁性能的Nd2Fe14B／α－Fe纳米晶双相复合永磁合金合金最佳磁性能为：Jr＝1．161T（11．6kGs），Hci＝580．50hA／m（7．30kOe）和（BH）max＝162．7kJ／m3（20．5MGs·Oe）该合金成分为Nd7．5Dy1Fe85B4．5Ga2，其显微组织由晶粒尺寸约为32nm的硬磁相Nd2Fe14B和16nm左右的软磁相α－Fe组成该合金存在显著的剩磁增强效应，剩磁比Jr／Js＝0．754．
The optimum magnetic properties of Nd2Fe14B / α-Fe nanocrystalline dual phase composite permanent magnetic alloys with high magnetic properties were prepared by quenching and heat treatment. The optimal magnetic properties of the alloys were as follows: Jr = 1.161T (11.6kGs) , Hci = 580.50 hA / m (7.30 kOe) and (BH) max = 162.7 kJ / m3 (20.5 MGs Oe) This alloy composition is Nd7.5Dy1Fe85B4.5Ga2 and the microstructure thereof is represented by a grain size of about The results show that there is a remarkable remanence enhancement effect for Nd2Fe14B hard magnetic phase of 32nm and soft magnetic phase of α-Fe of about 16nm. The remanence ratio Jr / Js is 0.754.