کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1519058 | 1511627 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of the Ti/Zr ratio and the synthesis route on hydrogen absorbing properties of (Ti1âxZrx)Mn1.5V0.5 alloys
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The hydrogenation properties of two pseudo-binary Ti1âxZrxMn1.5V0.5 alloys with x=0.15 and 0.5 obtained by arc melting and mechanical alloying have been studied. All alloys crystallize in the hexagonal C14 Laves phase. Arc-melted alloys are microcrystralline and exhibit local variations of Ti and Zr contents which are not overcome by annealing treatments. As for milled alloys, agglomerated nanocrystallites (â¼9 nm in diameter) are obtained after subsequent thermal annealing at 800 °C. For high Zr-contents, a better chemical homogeneity is obtained by the milling route. Whatever the synthesis route is, the hydrogen equilibrium pressure decreases with increasing Zr content due to cell-volume increase of the intermetallic compound. As concerns kinetics, very fast hydrogenation rates of few seconds are obtained at room temperature, particularly for milled alloys.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Physics and Chemistry of Solids - Volume 67, Issues 5â6, MayâJune 2006, Pages 1281-1285
Journal: Journal of Physics and Chemistry of Solids - Volume 67, Issues 5â6, MayâJune 2006, Pages 1281-1285
نویسندگان
B. Villeroy, F. Cuevas, J. Bettembourg, P. Olier, M. Latroche,