Corrosion part 7 – hydrogen permeation experiments with PGSTAT302F

Hydrogen permeation is a phenomenon that limits the practical use of high tensile strength steel alloys by introducing cracking hazards due to hydrogen penetration and hydrogen accumulation in the bulk of the alloy. Hydrogen permeation is usually encountered during electrochemical processes that involve hydrogen evolution, such as electroplating, corrosion, or cathodic protection. Hydrogen tends to accumulate in areas of high stress and can reach critical concentration causing cracks to occur which in turn compromises the mechanical integrity of the structure.