کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9803217 | 1516463 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrogen sorption properties for surface treated MgH2 and Mg2Ni alloys
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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: Hydrogen sorption properties for surface treated MgH2 and Mg2Ni alloys Hydrogen sorption properties for surface treated MgH2 and Mg2Ni alloys](/preview/png/9803217.png)
چکیده انگلیسی
In our group, strong enhancement of the hydrogen sorption capacities and kinetics of Mg and intermetallic alloys was recently achieved by surface treatments using physical and chemical means separately or in convert. In the latter, our approach consists in the preparation of tailor-made composites by ball-milling the alloy with preground graphite using specific milling conditions, followed by the deposition of Pd nanoparticles on the alloys surface using the polyol process. The benefit of graphite was ascribed to the carbon coating leading to the protection of the reactive metallic particles toward oxidation and the reduction character of carbon cleaning the alloy surface of NiO. Finally, the fine Pd particles deposited at the metallic surface probably act as hydrogen pumps during the desorption process. By combining both techniques, a hydrogen desorption as high as 3âwt.% in 60âmin at 150â° C and 6.2âwt.% in 30âmin at 300â° C are obtained for surface treated Mg2Ni alloy and MgH2, respectively. The latter treatment for MgH2 is compared with the deposition of CeO2 doped 6âat.% of Pt.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volumes 404â406, 8 December 2005, Pages 293-296
Journal: Journal of Alloys and Compounds - Volumes 404â406, 8 December 2005, Pages 293-296
نویسندگان
R. Janot, X. Darok, A. Rougier, L. Aymard, G.A. Nazri, J.-M. Tarascon,