Microstructure and First Hydrogenation Properties of TiHfZrNb1-xV1+x Alloy for x = 0, 0.1, 0.2, 0.4, 0.6 and 1

Salma Sleiman; Jacques Huot

doi:10.3390/molecules27031054

Microstructure and First Hydrogenation Properties of TiHfZrNb_1-xV_1+x Alloy for x = 0, 0.1, 0.2, 0.4, 0.6 and 1

Molecules. 2022 Feb 4;27(3):1054. doi: 10.3390/molecules27031054.

Authors

Salma Sleiman¹, Jacques Huot¹

Affiliation

¹ Hydrogen Research Institute, Université du Québec à Trois-Rivières, 3351 des Forges, Trois-Rivières, QC G9A 5H7, Canada.

Abstract

The effect of the substitution of Nb by V on the microstructure and hydrogen storage properties of TiHfZrNb_1-xV_1+x alloys (x = 0.1, 0.2, 0.4, 0.6 and 1) was investigated. For x = 0, the alloy was pure BCC and upon the substitution of niobium by vanadium, the BCC was progressively replaced by HCP and FCC phases. For x = 0.6, a C15 phase was also present and becomes the main phase for x = 1. The substitution greatly enhanced the first hydrogenation and makes it possible at room temperature under 20 bars of hydrogen. The capacity of all substituted alloys was around 2 wt.%.

Keywords: BCC; V substitution; high entropy alloys; kinetics; metal hydrides.

Grants and funding

Discovery grant/Natural Sciences and Engineering Research Council