Influence of Laves phase on microstructure and hydrogen storage properties of Ti–Cr–V based alloy

Effect of the Addition of 4 wt% Zr to BCC Solid Solution Ti52V12Cr36 at Melting/Milling on Hydrogen Sorption Properties

“…Elimination of the incubation time could greatly improve the first hydrogenation process. The activation process is still not well understood, but it can be improved by many means such as introduction of additives/ catalysts, method of synthesis, or heat treatments (Huot, 2012;Miraglia et al, 2012;Bibienne et al, 2015;Banerjee et al, 2016;Young et al, 2016;Balcerzak, 2017;Kamble et al, 2017).…”

Investigation of Crystal Structure, Microstructure, and Hydrogenation Behavior of Heat-Treated Ti52V12Cr36 Alloy

“…Reduction of oxygen concentration and homogenization of the microstructure could bring improvement of hydrogen storage behaviors. Banerjee et al found that the proportion of C15-type Laves phase increases with the amount of additive when Ti 2 CrV + ( X wt %)­ZrFe 1.8 V 0.2 ( X = 5, 10, 15, or 20) was annealed at 1173 K for 2 days . The cohabitation of C15-type Laves phase with BCC phase resulted in rapid hydrogenation.…”

“…Banerjee et al found that the proportion of C15-type Laves phase increases with the amount of additive when Ti 2 CrV + (X wt %)ZrFe 1.8 V 0.2 (X = 5, 10, 15, or 20) was annealed at 1173 K for 2 days. 8 The cohabitation of C15-type Laves phase with BCC phase resulted in rapid hydrogenation. However, they measured a reduction of hydrogen capacity with increasing proportion of additive.…”

Ti-V-C-Based Alloy with a FCC Lattice Structure for Hydrogen Storage

“…Various types of hydrogen storage materials have been studied for these kinds of applications, e.g., chemical storage in the metals and alloys (V, La-Ni, Ti-Fe, Mg/Mg-M, M = metal), M-Al-H, M-N-H and M-B-H systems, or physical adsorption of hydrogen on carbon based materials or metal-organic frameworks (MOFs) [4,5,6]. Ti-V-based alloys with a body-centered cubic (BCC) structure have been intensively investigated as hydrogen storage materials [7,8,9,10,11,12,13,14] because of their characteristics of high hydrogen capacity (4 wt.%, or about 150 kg H/m 3 ) and a possibility of working temperatures below 200 °C. The challenges of the Ti-V-based alloys for hydrogen storage lie in their low reversible storage capacity (less than 3 wt.%) and very difficult activation process, when normally a temperature of above 400 °C and a hydrogen pressure above 4 MPa are needed for activation before the Ti-V alloys may absorb hydrogen.…”