کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8152701 | 1524758 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of particle size on the mechanical properties and magnetocaloric effect of La0.8Ce0.2(Fe0.95Co0.05)11.8Si1.2/Sn composites
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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
The particle size dependence of the mechanical properties and the magnetocaloric effect (MCE) in La0.8Ce0.2(Fe0.95Co0.05)11.8Si1.2/Sn composites were studied. The compressive strength (Ïbc) was in the range of 180-200â¯MPa for composites with particle sizes less than 180â¯Î¼m, which is much higher than the compressive strength of larger size powders (136â¯MPa). When the particles were larger than 45â¯Î¼m, the observed maximum magnetic entropy change (âÎSM)max of 7.66-7.99â¯J/(kgâ
K) shows that surface/interface anisotropy effects have a negligible impact on MCE. The adiabatic temperature change (ÎTad) increased from 1.74â¯K@1.4â¯T, for particles in the size range of 0-45â¯Î¼m, to 1.91â¯K@1.4â¯T for particles in the size range of 45-100â¯Î¼m. The ÎTad was in the range of â¼2.0â¯K@1.4â¯T when the particle size increased from 100 to 250â¯Î¼m. Magnetic hysteresis in these second-order phase transition alloys showed negligible change in the particle size range of 0-250â¯Î¼m. These results are useful of La(Fe,Si)13-based compounds for magnetocaloric applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 463, 1 October 2018, Pages 23-27
Journal: Journal of Magnetism and Magnetic Materials - Volume 463, 1 October 2018, Pages 23-27
نویسندگان
X.C. Zhong, X.L. Feng, J.H. Huang, Y.L. Huang, Z.W. Liu, R.V. Ramanujan,