کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1638345 | 1517005 | 2009 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced hydrogen storage kinetics of nanocrystalline and amorphous Mg2N-type alloy by substituting Ni with Co
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enhanced hydrogen storage kinetics of nanocrystalline and amorphous Mg2N-type alloy by substituting Ni with Co Enhanced hydrogen storage kinetics of nanocrystalline and amorphous Mg2N-type alloy by substituting Ni with Co](/preview/png/1638345.png)
چکیده انگلیسی
In order to improve the hydrogen storage kinetics of the Mg2Ni-type alloys, Ni in the alloy was partially substituted with element Co. The Mg2Ni-type Mg2Ni1-xCox (x=0, 0.1, 0.2, 0.3, 0.4) alloys were fabricated by melt-spinning technique. The structures of the as-spun alloys were characterized by XRD and TEM. The gaseous and electrochemical hydrogen storage kinetics of the alloys was measured. The results show that the substitution of Co for Ni notably enhances the glass forming ability of the Mg2Ni-type alloy. The amorphization degree of the alloys visibly increases with rising of Co content. Furthermore, the substitution of Co for Ni significantly improves the hydrogen storage kinetics of the alloys. With an increase in the amount of Co substitution from 0 to 0.4, the hydrogen absorption saturation ratio of the as-spun (15 m/s) alloy increases from 81.2% to 84.9%, the hydrogen desorption ratio from 17.60% to 64.79%, the hydrogen diffusion coefficient increases from 1.07Ã10â11 to 2.79Ã10â11 cm2/s and the limiting current density increases from 46.7 to 191.7 mA/g, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 21, Issue 9, September 2011, Pages 2002-2009
Journal: Transactions of Nonferrous Metals Society of China - Volume 21, Issue 9, September 2011, Pages 2002-2009
نویسندگان
Yang-huan ZHANG, Chun-hong SONG, Hui-ping REN, Zhi-gang LI, Feng HU, Dong-liang ZHAO,