Atom probe study on the bulk nanocomposite SmCo/Fe permanent magnet produced by ball-milling and warm compaction
نویسندگان
چکیده
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 a-Fe particles uniformly distributed in the SmCo phase matrix. The a-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 a-Fe(Co) phase explained why the saturation magnetization of the nanocomposite permanent magnet was higher than that expected from the original pure a-Fe and SmCo5 powders, which enhanced further the maximum energy product of the nanocomposite permanent magnet. & 2011 Elsevier B.V. All rights reserved.
منابع مشابه
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