Abstract

AbstractHydrides of titanium and zirconium formed during cathodic polarization in acid solutions were investigated by the 15N nuclear reaction method. Hydrogen depth profiles obtained in this way give informations about the hydrogen concentration in the metal, allowing to determine diffusion coefficients and therefrom to study the absorption of hydrogen by the metal lattice and the kinetics of the hydride layer growth. The mechanism was studied using Ti single crystals. The hydrogen diffusion was found to depend on the crystal orientation.

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