Morphologic, Structural, Steric, Energetic and Thermodynamic Studies of the Mechanical Alloy Mg50Ni45Ti5 for Hydrogen Storage

Nesrine Mechi, Ismahene Ben Khemis, H. Dhaou, S. Zghal, A. B. Lamine
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Abstract

The Mg50Ni45Ti5 alloy for the hydrogen storage is prepared by mechanical alloying. The structure and the morphology of the alloy are characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). These techniques esteemed that this alloy is a good candidate for hydrogen storage, since it is both nanocristallin and dsuctile. This is confirmed by the modeling of the hydrogen equilibrium pressure-composition-temperature (PCT) relationships for this alloy. These isotherms were experimentally generated for three temperatures 313 K, 327 K and 340 K and modeled through the statistical physics using the monolayer model with two energies levels. Energetic, steric and thermodynamic studies were released thanks to this model which proved the efficiency and the security of this alloy to the storage of hydrogen.
贮氢机械合金Mg50Ni45Ti5的形貌、结构、位阻、能及热力学研究
采用机械合金化法制备了Mg50Ni45Ti5贮氢合金。采用x射线衍射(XRD)和扫描电镜(SEM)对合金的组织和形貌进行了表征。这些技术认为这种合金是一种很好的储氢材料,因为它既具有纳米晶性又具有可塑性。该合金的氢平衡压力-成分-温度(PCT)关系模型证实了这一点。这些等温线分别在313 K、327 K和340 K三个温度下进行了实验生成,并通过统计物理方法建立了两能级单层模型。该模型得到了能量、空间和热力学方面的研究,证明了该合金储氢的效率和安全性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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