Abstract
Hydrogen retention in vanadium and its binary alloys with titanium are investigated by means of hydrogen thermal desorption spectrometry. The samples are saturated with hydrogen for 2000 h at a temperature of 620 K in an autoclave, where hydrogen is fed at a pressure of 16.8 MPa. It is shown that in V-Ti alloys there are two main types of traps for hydrogen and from which the hydrogen release occurs in the temperature range of 780–790 (peak I) and 870–880 K (peak II) The position of peak I on the temperature scale does not depend on the alloy composition, and the intensity and position of peak II on the temperature scale are determined by the alloy composition. Titanium non-monotonically affects the amount of hydrogen retained: an addition of 0.5% Ti decreases, 1 and 5% Ti increases, and 10% Ti again decreases the amount of hydrogen in the alloy. A physical explanation of the appearance of two peaks of hydrogen thermal desorption and nonmonotonic influence of titanium on the amount of hydrogen in vanadium is proposed.
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Original Russian Text © Aung Kyaw Zaw, I.I. Chernov, M.S. Staltsov, B.A. Kalin, V.S. Efimov, 2014, published in Perspektivnye Materialy, 2014, No. 7, pp. 30–36.
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Zaw, A.K., Chernov, I.I., Staltsov, M.S. et al. Hydrogen retention by vanadium-titanium alloys. Inorg. Mater. Appl. Res. 6, 138–142 (2015). https://doi.org/10.1134/S2075113315020045
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DOI: https://doi.org/10.1134/S2075113315020045