Hydrogen accumulation and distribution during the saturation of a VT1-0 titanium alloy by an electrolytic method and from a gas atmosphere

• Published in: Technical physics Vol. 59; no. 9; pp. 1378 - 1382
• Main Authors: Kudiyarov, V. N., Lider, A. M., Pushilina, N. S., Timchenko, N. A.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.09.2014; Springer
• Subjects: Analysis; Classical and Continuum Physics; Force and energy; Hydrogen; Methods; Physics; Physics and Astronomy; Physics of Nanostructures; Titanium; Titanium alloys; Hydride; Hydrogen System; Titanium Alloy; Titanium Hydride; Hydrogen Desorption
• ISSN: 1063-7842; 1090-6525
• DOI: 10.1134/S1063784214090151

The accumulation, distribution, and thermally stimulated release of hydrogen in a VT1-0 titanium alloy during electrolytic saturation and gas-phase saturation are studied. After electrolytic saturation, a 0.4-μm-thick surface layer consisting of δ hydrides with a binding energy of 108 kJ/mol forms in the alloy. The hydride dissociation after electrolytic saturation in heating occurs in the temperature range 320–370°C. After saturation from a gas atmosphere, δ hydrides with a binding energy of 102 kJ/mol form throughout the alloy volume. The dissociation of the hydrides formed during gas-phase saturation in heating occurs in the temperature range 520–530°C. A further increase in the temperature is accompanied by the transformation of titanium from the α into the β modification. At 690–720°C, the phase transformation is completed, and another hydrogen desorption peak appears in a thermally stimulated hydrogen desorption spectrum.