کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7995295 | 1516203 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of step-like martensitic transformation on the magnetic entropy change of Ni40.6Co8.5Mn40.9Sn10 unidirectional crystal grown with the Bridgman-Stockbarger technique
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We report a step-like martensitic transformation and its effect on magnetocaloric properties in Ni40.6Co8.5Mn40.9Sn10 unidirectional crystal grown using the Bridgman-Stockbarger technique followed by vacuum annealing at 1173 K for 72 h. This alloy undergoes successive first-order phase transitions which are attributed to the monotonic compositional variation along the crystal growth direction; the latter results in the increase of the full-width at half-maximum of the magnetic entropy change as a function of temperature (δTFWHM). For a magnetic field change of 2 and 5 T, the maximum magnetic entropy change are 9.7 and 16.0 J kgâ1Kâ1 with an extended δTFWHM of 11 and 23 K, respectively. The average hysteresis loss for a field change of 2 T is 19 J kgâ1 reducing the refrigerant capacity by 17%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 691, 15 January 2017, Pages 269-274
Journal: Journal of Alloys and Compounds - Volume 691, 15 January 2017, Pages 269-274
نویسندگان
F. Chen, Y.X. Tong, L. Li, J.L. Sánchez Llamazares, C.F. Sánchez-Valdés, P. Müllner,