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Impression : La taille de cette affiche est de 121,9 cm (largeur) sur 91,5 cm (hauteur). Elle doit être imprimée sur une imprimante grand format. Personnalisation du contenu : Les espaces réservés de cette affiche sont déjà mis en forme. Pour ajouter du texte, tapez-le dans les espaces réservés ou cliquez sur une icône pour ajouter un tableau, un graphique, un graphique SmartArt, une image ou un fichier multimédia. Pour ajouter ou supprimer des puces, cliquez sur le bouton Puces sous l’onglet Accueil. Si vous avez besoin d’espaces réservés supplémentaires pour les titres, le contenu ou le texte du corps, effectuez une copie de ce dont vous avez besoin, puis insérez- la à l’endroit désiré. Les repères actifs de PowerPoint vous permettront d’aligner votre élément sur les autres. Vous voulez remplacer les images par les vôtres ? Aucun problème ! Cliquez simplement sur une image, appuyez sur la touche Suppr, puis cliquez sur l’icône pour ajouter votre image. Hydrogen storage properties of TiFe + X wt.% Zr, V (X=0, 4) alloys Abhishek KUMAR PATEL 1,2, Jacques HUOT 1, Pratibha SHARMA 2 1 Université du Québec à Trois-Rivières – Institut de Recherche sur l’hydrogène , boul. des Forges, C.P. 500, Trois-Rivières (Québec) G9A 5H7 2 Indian Institute of Technology- Department Of Energy Science and Engineering, Powai, Mumbai, (Maharashtra), , India INTRODUCTION TiFe alloy is well known metal hydride. It is a low cost intermetallic compound which operates at room temperature under mild pressure conditions [1]. One problem facing this type of alloy is that the first hydrogenation (activation) is difficult. The usual way to solve this problem is to expose the alloy to high temperature and high hydrogen pressure. Unfortunately, this makes the cost of metal hydride too expensive for most applications. It has been shown that addition of Zr could greatly reduce activation time under mild temperature and hydrogen pressure [2]. This ease of activation due to doping will make the TiFe alloy less expensive for practical applications. However, one issue is the production of alloy at industrial scale. Therefore, by using industrial grade Fe and Ti, TiFe alloy doped Zr, V were synthesized and hydrogen storage properties of these alloys were studied. OBJECTIVES CONCLUSION RESULTS Fig. 1: X-Ray diffraction patterns of (A) FeTi, (B) FeTi+4wt%V, (C) FeTi+4wt%Zr ACKNOWLEDGEMENT Structure METHODOLOGY  Effect of Zr and V as a dopant on the first hydrogenation curve of TiFe alloy synthesized with commercial grades Ti and Fe.  Comparison between the crystal structure of TiFe alloy and TiFe doped with Zr and V.  X-ray diffraction patterns only showed the TiFe phase.  Secondary phase could not be detected by X-ray diffraction.  First hydrogenation of TiFe alloy with 4wt% Zr was achieved at room temperature and under 20 bar hydrogen pressure.  Effect of Zr on activation of TiFe alloy will be studied by scanning electron microscopy and neutron diffraction. Activation properties REFERENCES Fig. 2: Activation curve of TiFe, TiFe +4wt% V and TiFe+4wt% Zr at room temperature under 20 bar hydrogen pressure.  Addition of Zr is highly effective while V do not have any effects. [1] Reilly, J.J. and R. H. Wiswall, Formation and properties of Iron Titanium hydride. Inorganic chemistry, (1): p [2] Jain, P; et al. Hydrogenation properties of Tife with Zr7Ni10 alloy as additive. Journal of alloy and compounds, (0): p  A.K. Patel would like to thank the Canadian Queen Elizabeth II Diamond Jubilee Scholarships for a Ph.D. fellowship.  The participation of CMQ (Quebec Metallurgy Centre) is recognized. ABSTRACT The aim of this study is to understand the comparative effect of Zr and V on hydrogenation characteristics of TiFe alloy, using industrial grade Fe (ASTM 10005) and Ti (ASTM B265 grade 1) as a raw material. Materials were synthesized by arc melting and studied without further heat treatments. We found that TiFe alloy doped with 4 wt% of Zr leads to a remarkable improvement of the first hydrogenation kinetics of TiFe alloy.. Synthesis of materials All samples were synthesized by arc melting. Single melt TiFe, TiFe +4wt% Zr, V were synthesized. Crystal Structure X-ray diffraction patterns of all samples were studied. Crystal structure were determined for all samples. Activation Sievert-type apparatus was used to activate all samples. Capacity of hydrogen absorption was measured for all samples. All alloys crystallizes in CsCl type crystal structure with lattice parameter Å.