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The effect of the substitution of Nb by V on the microstructure and hydrogen storage properties of TiHfZrNb1−xV1+x alloys (x = 0.1, 0.2, 0.4, 0.6 and 1) was investigated. For… Click to show full abstract
The effect of the substitution of Nb by V on the microstructure and hydrogen storage properties of TiHfZrNb1−xV1+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.%.
Journal Title: Molecules
Year Published: 2022
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