论文部分内容阅读
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.