کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7934846 | 1512943 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of Cu on dehydrogenation and thermal stability of amorphous Mg-Ce-Ni-Cu alloys
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
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چکیده انگلیسی
The alloying element component is very crucial in improving the hydrogen storage performance of amorphous alloys. In this work, quaternary amorphous Mg70âxCe10Ni20Cux (x = 3, 7.5, 10) alloys were prepared by melt-spinning and the effect of Cu on hydrogenation and dehydrogenation were investigated in comparison with the Mg70âxCe10Ni20 amorphous alloys. The initial hydrogenation kinetics of amorphous Mg70âxCe10Ni20Cux (x = 0, 3, 7.5, 10) was improved with the increase of Cu content according to the kinetics measured at a temperature below crystallization temperature. As hydrogen is absorbed, an amorphous-amorphous transition occurred, and relatively high Cu content would lead to phase separation in the hydrogenation process. Amorphous phase have much higher crystallization temperature after it absorbs hydrogen and the addition of Cu could increase the crystallization activation energy of amorphous hydrides. In addition, the increase of Cu content could reduce the dehydrogenation temperature of amorphous hydrides, which gives a significant indication for future improving research of the hydrogen desorption performance of Mg based amorphous hydrides.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Natural Science: Materials International - Volume 27, Issue 5, October 2017, Pages 622-626
Journal: Progress in Natural Science: Materials International - Volume 27, Issue 5, October 2017, Pages 622-626
نویسندگان
Chi Zhang, Hui Wang, Liu-Zhang Ouyang, Huai-Jun Lin, Min Zhu,