Molecular hydrogen pressure in macrocollectors during hydrogen charging of steel at elevated temperatures

Abstract

When a metal is being charged with hydrogen by exposing it to omnidirectional pressure of a hydrogen-bearing medium, the molecular hydrogen pressure in macrocollectors reaches the partial hydrogen pressure in the medium. In the case of metals exposed to unidirectional pressure of a hydrogen-bearing medium, the hydrogen pressure in collectors situated near the absorbing surface reaches the level of the partial hydrogen pressure in the medium and approaches zero in collectors situated near the desorbing surface. An inert (in respect to hydrogen) gas present in a collector under pressure does not inhibit the accumulation of hydrogen in this collector.