کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1626743 1516444 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of Ce on the structure and hydrogen storage properties of V55Ti22.5Cr16.1Fe6.4
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Effect of Ce on the structure and hydrogen storage properties of V55Ti22.5Cr16.1Fe6.4
چکیده انگلیسی

In this paper, the effect of rare metal element Ce on the microstructure, activation performance and hydrogen storage properties of V55Ti22.5Cr16.1Fe6.4 BCC alloy were researched by X-ray diffraction analysis (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectrometer (EDS) and pressure-composition-temperature (PCT) measurements. An obvious segregation of Ce happens in the Ce-containing alloys, and the addition of Ce did not change the structure of BCC alloy and the lattice parameter. The activation performance of V55Ti22.5Cr16.1Fe6.4 is improved greatly by the addition of Ce. The Ce-free alloy cannot absorb hydrogen without being activated under a high temperature, but all Ce-containing alloys can absorb hydrogen rapidly at room-temperature. The absorption and desorption hydrogen capacities and the plateau pressures have no evident change when Ce content increases. Both Ce and CeO2 were found in the Ce-containing alloys. It was due to the high activation property of Ce, which can react with hydrogen, that the Ce-containing alloys are activated rapidly.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 429, Issues 1–2, 21 February 2007, Pages 301–305
نویسندگان
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