کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8153832 | 1524769 | 2018 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High coercive Zn-bonded Sm-Fe-N magnets prepared using fine Zn particles with low oxygen content
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
To improve the coercivity of Zn-bonded Sm-Fe-N magnets, fine Zn particles with low oxygen content were fabricated by the hydrogen plasma-metal reaction (HPMR), and Zn-bonded Sm-Fe-N magnets were prepared using the Zn particles. The primary and secondary average Zn particle sizes were 0.23 and 0.93â¯Î¼m, respectively, and the oxygen content was 0.068â¯wt%. The oxygen content in the Zn-bonded Sm-Fe-N magnets prepared using the Zn particles also decreased, and the coercivity and energy products of the 15â¯wt% Zn-bonded Sm-Fe-N magnets were 2.66â¯MA·mâ1 and 53.1â¯kJ·mâ3, respectively, at room temperature. The 10â¯wt% Zn-bonded Sm-Fe-N magnet was also a high coercivity value of 2.41â¯MA·mâ1, and the energy product was 56.1â¯kJ·mâ3. The coercivity strongly depended on the oxygen content rather than the particle size of Zn, and decreasing the oxygen content in the starting material improved the magnetic properties of Zn-bonded Sm-Fe-N magnets. The coercivity of the 15â¯wt% Zn magnet measured at 180 and 200â¯Â°C was 1.23 and 1.10â¯MA·mâ1, respectively, and the temperature coefficient of coercivity was â0.32%·°Câ1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 452, 15 April 2018, Pages 243-248
Journal: Journal of Magnetism and Magnetic Materials - Volume 452, 15 April 2018, Pages 243-248
نویسندگان
Masashi Matsuura, Tomoki Shiraiwa, Nobuki Tezuka, Satoshi Sugimoto, Tetsuya Shoji, Noritsugu Sakuma, Kazuaki Haga,