Fe-Ce-Ni纳米晶粉体的机械合金化研究

Fe-Al-Ni Nano-crystalline Powders Prepared by Mechanical Alloy

研究按物质的量配比分别为n(Fe-Ce)∶n(Ni)=0.7∶0.3和n(Fe-Ni)∶n(Ce)=0.8∶0.2的混合粉体在机械合金化过程中的结构演变和软磁性,采用X射线衍射法表征机械合金化粉体的结构演变过程,用振动样品磁强计对样品的静磁性能进行测试分析。结果表明:球磨150 h后,按物质的量配比为n(Fe-Ce)∶n(Ni)=0.7∶0.3和n(Fe-Ni)∶n(Ce)=0.8∶0.2的混合粉体都分别成为纳米晶粉体,球磨时间和Ni成分的含量都对其软磁性能有影响。

The structural evolution and soft magnetism of the elemental powders in molar ratio of n （Fe-Ce） ： n （Ni） =0.7 ： 0.3 and n （Fe-Ni） ： n（Ce）=0.8：0.2respectively were researched by mechanical alloying method. The structural evolution was characterized by X-ray diffraction （XRD） and the soft magnetism was measured by vibrating sample magnetometer （VSM）. The experimental results showed that the last milling products of the elemental powders in molar ratio of n （Fe -Ce） ： n （Ni） =0.7：0.3 and n （Fe-Ni） ：n （Ce）=0.8：0.2 respectively were nano- crystalline. The soft magnetic properties of the samples were affected by the milling time and Ni content of the powders.