Enhancement of First Hydrogenation of Ti1V0.9Cr1.1 BCC Alloy by Cold Rolling and Ball Milling

Salma Sleiman; Anis Aliouat; Jacques Huot

doi:10.3390/ma13143106

Enhancement of First Hydrogenation of Ti₁V_0.9Cr_1.1 BCC Alloy by Cold Rolling and Ball Milling

Materials (Basel). 2020 Jul 12;13(14):3106. doi: 10.3390/ma13143106.

Authors

Salma Sleiman¹, Anis Aliouat², Jacques Huot¹

Affiliations

¹ Hydrogen Research Institute, Université du Québec à Trois-Rivières, 3351 des Forges, Trois-Rivières, QC G9A 5H7, Canada.
² Faculty of Sciences, Université de Poitiers, 15, rue de l'Hôtel Dieu-TSA 71117, 86073 Poitiers CEDEX 9, France.

Abstract

In this study, we evaluated the effects of a mechanical treatment by cold rolling (CR) and ball milling (BM) on the first hydrogenation of Ti₁V_0.9Cr_1.1 alloy. The as-cast alloy has a body-centered cubic (BCC) crystal structure, and the first hydrogenation at room temperature under 20 bars of hydrogen is practically impossible. However, the samples mechanically activated by CR or BM readily absorbed hydrogen. The sample cold-rolled for one pass exhibited faster kinetics than the sample ball-milled for five minutes, but both samples reached the same storage capacity of 3.6 wt % hydrogen. Increasing the amount of rolling or the milling time decreased the hydrogen capacity. CR is considered the best and most efficient method for the activation of Ti₁V_0.9Cr_1.1 alloy.

Keywords: BCC alloys; ball milling; cold rolling; hydrogen storage; kinetics.