کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1798192 1524815 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of annealing process on magnetic properties and structures of Nd–Pr–Ce–Fe–B melt-spun powders
ترجمه فارسی عنوان
اثر فرآیند خنک کننده بر خواص مغناطیسی و ساختارهای پودر ذوب شده ذوب شده
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
چکیده انگلیسی


• The slow cooling rate help to improve magnetic properties for high Ce-content powders.
• The optimal annealing temperature is 590–650 °C when annealing time is fixed in 5 min.
• The powders will contain Fe2B and α-Fe when the annealing time is more than 3 min.
• The oxygen contents of powders change little after low temperature or short time annealed.

The effects of annealing process on magnetic properties and structures of Nd–Pr–Ce–Fe–B melt-spun powders have been investigated. The magnetic properties improve a lot when the annealing temperature is 590–650 °C and the annealing time exceeds 1 min. The magnetic properties is stable when the annealing time is 590–650 °C. The powders contains obvious grains when the annealing time is only 1 min, while the grains grow up obviously, leading to the decrease of Br and (BH)max, when the annealing time is more than 9 min. The Hcj changes little for different annealing time. The cooling rate also affects the magnetic properties of powders with different Ce-content. Faster cooling rate is favorable to improve magnetic properties with low Ce-content powders, while high Ce-content powders need slower cooling rate.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 406, 15 May 2016, Pages 239–243
نویسندگان
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