کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1621698 | 1005750 | 2010 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Formation and hydrogen reactivity of MgCo compound
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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: Formation and hydrogen reactivity of MgCo compound Formation and hydrogen reactivity of MgCo compound](/preview/png/1621698.png)
چکیده انگلیسی
The Mg-Co mixture was milled using a low energy mill during 200Â h under argon and then submitted to thermal treatment. The mechanical milling (MM) of Mg-Co mixture leads to microstructural refinement reducing the diffusion distances and then favoring the kinetics of solid-state reaction. As a consequence, the formation of MgCo compound occurs at temperatures of 573Â K which is lower than previously reported. As-milled sample (Mg and Co phases) and as-milled plus heated sample (with mainly MgCo compound) were non-isothermally heated under hydrogen pressure using high-pressure differential scanning calorimetric equipment. The presence of MgCo intermetallic compound improves the reactivity with hydrogen, reducing both hydrogen absorption and desorption temperature, as well as increasing the total hydrogen storage capacity. An analysis of the interplay of hydride phases as a function of the starting samples and experimental conditions is presented.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 495, Issue 2, 16 April 2010, Pages 659-662
Journal: Journal of Alloys and Compounds - Volume 495, Issue 2, 16 April 2010, Pages 659-662
نویسندگان
M.G. Verón, F.C. Gennari,