کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1622456 1516394 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of nanocomposite hydrides for solid-state hydrogen storage by controlled mechanical milling techniques
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Synthesis of nanocomposite hydrides for solid-state hydrogen storage by controlled mechanical milling techniques
چکیده انگلیسی

The following composite hydride systems: NaBH4–MgH2, MgH2–LiAlH4, MgH2–VH0.81 and MgH2–NaAlH4, were synthesized in a wide range of compositions by controlled reactive/mechanical (ball) milling in a magneto-mill. In effect, composites having nanometric grain sizes of the constituent phases (nanocomposites) were produced. It is shown that the hydrogen desorption temperature of the composite constituent with the higher desorption temperature in the systems such as NaBH4 + MgH2, MgH2 + VH0.81 and MgH2 + LiAlH4 substantially decreases linearly with increasing volume fraction of the constituent having lower desorption temperature according to the well-known composite rule-of-mixtures (ROM). It is also shown that the ROM behavior can break down due to an ineffective milling of a composite. The composite system MgH2 + NaAlH4 does not obey the ROM behavior.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 483, Issues 1–2, 26 August 2009, Pages 252–255
نویسندگان
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