کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1281348 1497642 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structural and hydrogenation properties of SrAl2−xNix alloys
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Structural and hydrogenation properties of SrAl2−xNix alloys
چکیده انگلیسی

In this paper, Al was partially substituted by Ni in the Zintl phase alloy SrAl2 and the structural and hydrogenation characteristics of the SrAl2−xNix (0 ≤ x ≤ 0.4) alloys were studied by X-ray diffraction (XRD), scanning electronic microscopy (SEM) and hydrogenation measurements. The alloy consisted of a single Zintl phase of SrAl2 when x = 0. However, partial substitution of Al by Ni resulted in multiphase structure of the alloys. When x = 0.1, the alloy was composed of SrAl2, Sr5Al9, SrAl and AlNi phases. With the increase of x, the amount of SrAl2 and Sr5Al9 phases decreased, while the amount of SrAl and AlNi phases increased. Hydrogenation measurements were made at 473 K under 3 MPa hydrogen pressure. It was interesting to find that the hydriding kinetics of the alloy was improved greatly after Ni substitution, which could be attributed to the catalysis of AlNi phase.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 33, Issue 24, December 2008, Pages 7498–7504
نویسندگان
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