Preparation of anisotropic Nd(Fe,Mo)12N1.0 magnetic materials by strip casting technique and direct nitrogenation for the strips
Preparation of anisotropic Nd(Fe,Mo)12N1.0 magnetic materials by strip casting technique and direct nitrogenation for the strips
复制标题
带材连铸及带材直接氮化制备各向异性Nd(Fe,Mo)12N1.0磁性材料
DOI：
10.1063/1.3567017
复制
发表时间：
2011-04-01
影响因子：
3.2
通讯作者：
Yang, Yingchang
中科院分区：
文献类型：
--
作者：
Han, Jingzhi;Liu, Shunquan;Yang, Yingchang
The Nd(Fe,Mo)12-type alloys are prepared by strip casting technique, and direct nitrogenation of the strips without precrushing is executed in this paper. It is found that 6 h annealing treatment at 1050 °C for the strips is enough to obtain the single-phase Nd(Fe,Mo)12 compounds. The strips can be directly nitrogenated at 620 °C to obtain interstitial Nd(Fe,Mo)12N1.0 materials, and a spontaneous pulverization phenomenon in the strips induced by nitrogenation is found. The results indicate that the nitrogenation process of the strips can be used to prepare Nd(Fe,Mo)12N1.0 interstitial nitrides and pulverize the casted strips into fine particles simultaneously. Base on this, we propose a new technical route of preparing Nd(Fe,Mo)12NX magnetic powders without precrushing and obtain anisotropic NdFe10.5Mo1.5N1.0 powders with a remanence of Br = 1.08 T, a coercivity of iHc = 400 kA/m, and a maximum energy product of (BH)max = 144 kJ/m3.
