Hydrogen-Embrittled Catalyst Surface During hydrogen evolution reaction, diffuses into the catalyst grain boundaries either in atomic or molecular form and severely affects its mechanical properties causing catastrophic brittle failures (hydrogen embrittlement). The H-embrittled surface possesses good oxygen adsorption efficiency when this highly strained electrode is employed for reaction one ...

A new data-analysis method is proposed for processing time-force data obtained from a recently developed novel tuning-fork test that has been utilized in hydrogen embrittlement studies. The analysis based on the application of suitable functions are shown to provide good fit data. fitted allow calculation first- and second-order time derivatives initially scattered negative peaks can be associa...

This work focuses on the constitutive modelling of damage development in particle strengthened materials presence hydrogen. We apply model to an area at interface a dissimilar weld 8630 steel/IN625 nickel alloy which is known as ‘featureless region’. region contains array M7C3 carbides each measuring about 40 nm. Cleavage-like fracture has been observed only hydrogen and it attributed combinati...

The interactions between hydrogen, dislocations and vacancies that lead to the hydrogen embrittlement of iron-based materials have remained largely unknown with major impediments for development infrastructure transport storage. Recent studies hydrogen-induced lattice defects formed in pure iron common austenitic stainless steels by positron annihilation lifetime spectroscopy provided a breakth...