Hydride formation under cathodic charging of titanium and TiAl-based alloys in alkaline solutions |
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Authors: | E Lunarska O Chernyaeva D Lisovytskii |
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Affiliation: | (1) Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland |
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Abstract: | The electrochemical methods and the data of X-ray diffraction analysis are used to determine the parameters of cathodic polarization
for the hydrogenation of α-Ti and alloys based on the TiAl intermetallic phase without formation of the hydride phase or with
formation of hydrides. In α-Ti, the increasing cathodic polarization in a 0.1 M NaOH solution leads to the dissolution of
hydrogen in the metal lattice and its modification and to the increase in the amount of hydrides. The hydride phase is not
recorded TiAl-based alloys even for much higher levels of absorption of hydrogen as compared with pure titanium. However,
hydrogen affects the phase composition of alloys and the lattice parameters of the phases.
Published in Fizyko-Khimichna Mekhanika Materialiv, Vol. 44, No. 3, pp. 103–106, May–June, 2008. |
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