کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1808721 | 1525173 | 2015 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The coercivity mechanism of sintered SM(CobalFe0.245Cu0.07Zr0.02)7.8 permanent magnets with different isothermal annealing time
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Precipitation-hardened 2:17-type SmCo permanent magnet has attracted much attention due to its high Curie temperature and excellent magnetic properties. Sm(CobalFe0.245Cu0.07Zr0.02)7.8 (at%) sintered magnets with high remanence (Br ~1.15Â T) were prepared using a traditional powder metallurgy method. The intrinsic coercivity Hcj of the magnets was increased from 429 to 994Â kAÂ mâ1 with isothermal annealing time increasing from 10 to 40Â h, which is different from the phenomenon that increasing aging time leads to a reduced coercivity mentioned in the Ref. [16]. In consideration of rarely report about the microstructure of the final magnet isothermally annealed for 40Â h, we have tried to originally analyze the relationship between the microstructure and the magnetic properties. Besides, the lattice constants of sintered Sm(CobalFe0.245Cu0.07Zr0.02)7.8 permanent magnet isothermally annealed for 40Â h have been given by indexing the HRTEM results including the selected area electron diffraction (SAED) and HRTEM images.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 476, 1 November 2015, Pages 154-157
Journal: Physica B: Condensed Matter - Volume 476, 1 November 2015, Pages 154-157
نویسندگان
Wei Sun, Minggang Zhu, Zhaohui Guo, Yikun Fang, Wei Li,