کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1800391 | 1024526 | 2011 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Atom probe study on the bulk nanocomposite SmCo/Fe permanent magnet produced by ball-milling and warm compaction Atom probe study on the bulk nanocomposite SmCo/Fe permanent magnet produced by ball-milling and warm compaction](/preview/png/1800391.png)
The microstructure and compositions of the bulk nanocomposite SmCo/Fe permanent magnet were studied using transmission electron microscopy and 3-dimensional atom probe techniques. The excellent magnetic properties were related to the uniform nanocomposite structure with nanometer α-Fe particles uniformly distributed in the SmCo phase matrix. The α-Fe phase contained ∼26 at% Co, and the SmCo phase contained ∼19 at% Fe, confirming that the interdiffusion of Fe and Co atoms between the two phases occurred. The formation of the α-Fe(Co) phase explained why the saturation magnetization of the nanocomposite permanent magnet was higher than that expected from the original pure α-Fe and SmCo5 powders, which enhanced further the maximum energy product of the nanocomposite permanent magnet.
► A uniform nanocomposite SmCo/α-Fe permanent magnet with high performance obtained.
► The first quantitative analyses of interdiffusion of Fe and Co between the two phases presented.
► The saturation magnetization of the nanocomposite enhanced by the resulting α-Fe(Co) phase.
Journal: Journal of Magnetism and Magnetic Materials - Volume 323, Issue 22, November 2011, Pages 2855–2858