Dependence of surface oxidation on hydrogen absorption and desorption behaviors of Ti–6Al–4V alloy

Hydrogen transport through thin titanium oxides

“…The protective surface oxide layer generally present on Ti exposed to air or aqueous systems can hinder hydrogen absorption into the metal [20][21][22][23][24][25][26][27][28][29][30][31][32][33]. This retardation could be due to the lower diffusion coefficient for hydrogen in the oxide.…”

Effect of temperature on hydrogen absorption characteristic and microstructural evolution of TC21 alloy

“…Though the specimens prepared for hydrogenation have been cleaned up, new oxide layers generate on the surfaces of TC21 alloy during the process of heating up actually. Research shows that the diffusion of hydrogen into the titanium alloys are susceptible to be affected by the specimen's surface state [18,19]. The surface of the alloy is polluted by oxygen during the process of heating up, so the number of positions for hydrogen molecular to dissociate reduces, then the amount of the hydrogen atoms/ions which enter into the interior of the alloy decrease.…”

Hydrogen Uptake, Diffusion and Solubility in Commercial β-Titanium Alloys

“…Their application under conditions where hydrogen is present, e.g., as a fuel component, is limited though, due to their susceptibility to hydrogen embrittlement. [3,4] Experimental data on the thermodynamics and kinetics of hydrogen uptake in a-titanium alloys are established in the literature, [5,6] experiments on b-titanium alloys are rare though. [2] In order to assess the range of practical application conditions for b-titanium alloys in hydrogen bearing environments, it is necessary to study the kinetics and thermodynamics of hydrogen uptake and diffusion in the alloy as well as the effect of hydrogen on the mechanical properties of b-titanium alloys.…”