کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10128991 | 1645163 | 2019 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phase, microstructure and magnetic properties of 45.5Fe-28Cr-20Co-3Mo-1.5Ti-2Nb permanent magnet
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The 47.5-xFe-28Cr-20Co-3Mo-1.5Ti-xM; Mâ¯=â¯Nb; xâ¯=â¯0.5, 1, 1.5, 2.0, 2.5, 3.0 (wt%) permanent magnets have been investigated after solution annealing, thermomagnetic annealing and step-aging process. Alloys were prepared by vacuum melting and casting technique. Magnets with improved properties were developed through a modified thermal treatment cycle. Solution annealed specimens depict equiaxed α phase grain size of 250â¯Âµm while optimally thermomagnetic treated and step aged magnets yield ultra-fine Fe-Co nanorods (10â¯nm) precipitates in Cr-Ti-Nb matrix. The Nb addition to 47.5Fe-28Cr-20Co-3Mo-1.5Ti alloy expands the α phase structure by suppressing the nonmagnetic phases at annealed state and promotes shape anisotropy for spinodal phases in final treated samples leading to the improvements of magnetic properties. Spinodal phases preferentially aligned and elongated close to applied field direction and retained strong Goss {1â¯1â¯0}ã0â¯0â¯1ã orientations. The 45.5Fe-28Cr-20Co-3Mo-1.5Ti-2Nb magnet reveals Hc of 86.9â¯kA/m, Br of 1.24â¯T and (BH)max of 57â¯kJ/m3. High coercivity and remanence in the magnets are attributed to the ideal shape anisotropy of Fe-Co rich nanorods or nanowires.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 469, 1 January 2019, Pages 342-348
Journal: Journal of Magnetism and Magnetic Materials - Volume 469, 1 January 2019, Pages 342-348
نویسندگان
Shan Tao, Zubair Ahmad, Inam Ullah Khan, Pengyue Zhang, Xiaomei Zheng,