کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1803208 | 1024612 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of SiO2 nanopowders on magnetic properties and corrosion resistance of sintered Nd–Fe–B magnets
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
To improve the magnetic properties and corrosion resistance of magnet, SiO2 nanopowders were added into Nd28.25Dy2.75FebalAl0.15Ga0.1Nb0.1B0.98-sintered magnets as grain boundary modifiers. It was found that the intrinsic coercivity (Hcj), remanence (Br) and corrosion resistance were all improved with addition of certain amount of SiO2 nanopowders. The optimum addition amount of SiO2 nanopowders was found to be 0.01 wt%. Thermodynamic calculation in combination of energy dispersive X-ray spectroscopy (EDX) analyses indicated that SiO2 nanopowders reacted with Nd of Nd-rich phase. As a result, the intergranular phase was modified, and the grain growth of main phase was restrained. It led to the optimization of microstructure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 321, Issue 5, March 2009, Pages 392–395
Journal: Journal of Magnetism and Magnetic Materials - Volume 321, Issue 5, March 2009, Pages 392–395
نویسندگان
X.G. Cui, M. Yan, T.Y. Ma, W. Luo, S.J. Tu,