Mechanical activation of air exposed TiFe + 4 wt% Zr alloy for hydrogenation by cold rolling and ball milling. (8th November 2018)

• Record Type: Journal Article
• Authors: Manna, Joydev; Tougas, Bernard; Huot, Jacques
• Is Part Of: International journal of hydrogen energy. Volume 43:Number 45(2018)
• Page Start: 20795
• Page End: 20800
• Publication Date: 2018-11-08
• Subjects: TiFe alloy -- Zirconium -- Hydrogenation -- Air exposure -- Hydrogen storage; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.09.096
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: In this paper we report the effect of air exposure on TiFe + 4% Zr alloy and how the hydrogen capacity could be recovered by processing the alloy by cold rolling and ball milling. It has been noted that the alloy could not absorb hydrogen after 7 days of air exposure. To restore the hydrogenation capability of the alloy, it was mechanically treated using cold rolling and ball milling. It was found that the air exposed alloy could be hydrogenated after 30 min of ball milling under argon or after cold rolling. Effect of cold rolling and ball milling on first hydrogenation for pure TiFe alloy was also investigated. Highlights: TiFe with 4 wt% Zr alloy was synthesized. Effect of air exposure on first hydrogenation kinetics were studied. The alloy became inactive towards first hydrogenation after air exposure. Ball milling and cold rolling were effective to re-activate the alloy. Effect of cold rolling and ball milling on pure TiFe alloy was also investigated.