Formation of microstructures in Ti-Cr-V alloys with high hydrogen sorption capacity

Chem. Met. Alloys 9 (2016) 158-163

https://doi.org/10.30970/cma9.0347

N.E. SKRYABINA, D. FRUCHART, N.A. MEDVEDEVA, P. DE RANGO, A.A. MIRONOVA

TiVCr alloys known for their potentially large hydrogen uptake were formulated as (TiCr_1.8)_100-xV_x in order to quantify the impact of the vanadium concentration. Parallel to this series of pure ternaries, a second one was synthesized with 4 mol.% of Zr₇Ni₁₀ addition. Structural investigation and electrochemical charging with hydrogen revealed a fair dependence of the hydrogen uptake and hydride stability on the vanadium content, but conversely different due to the presence of the Zr-Ni additive.

HER overvoltage for (TiCr_1.8)_100-xV_x versus the V content.

Keywords

B.c.c. alloys / Zr-Ni additive / Microstructure / Hydrogen sorption / Electrochemical properties