3. Results and DiscussionWith using

3. Results and Discussion
With using the proposed experimental procedure the values of hydrogen concentration in the weld components
of steels API X52 were determined depending on exposure time. The most general observations, which can be made
from these results, are the followings. All components of weld demonstrate the sensitivity to hydrogenating in
deoxygenated, near-neutral pH NS4 solution under soft cathodic polarisation and processes of hydrogen evolution
and absorption have own specificity for each component. Here should be also pointed on some scatter of received
data, which reflects the dynamics of variable processes at environment-surface interface. The non-monotonic
dependencies of hydrogen concentration CH on exposure time τ have been found for all components of weld (Fig. 2).
After achieving of maximum, the hydrogen concentration decreases in time with some fluctuations to some steadystate
value CH(stab). As can be seen the time of exposure