کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1620931 1005741 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydrogen sorption properties of a Mg–Y–Ti alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Hydrogen sorption properties of a Mg–Y–Ti alloy
چکیده انگلیسی

The catalytic effect of titanium on the hydrogen sorption properties of a Mg–Y–Ti alloy has been investigated. The alloy is formed by a majority phase Mg24+xY5, a minor phase of solid solution of Y in Mg and Ti clusters randomly dispersed in the sample. During the first hydrogen absorption cycle 5.6 wt.% hydrogen was absorbed at temperatures above 613 K. The alloy decomposed almost completely to MgH2 and YH3. After hydrogen desorption pure Mg and YH2 were formed. For further absorption/desorption cycles the material had a reversible hydrogen capacity of 4.8 wt.%. The MgH2 decomposition enthalpy was determined to −68 kJ/mol H2, and the calculated activation energy of hydrogen desorption of MgH2 was 150(±10) kJ/mol.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 489, Issue 2, 21 January 2010, Pages 375–378
نویسندگان
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