Hydrogen permeation measurements at jet impinged steel membranes proved that hydrodynamic forces can destroy protective iron sulfide films and scales formed in sour environments and subsequently initiate hydrogen absorption. Under defined flow conditions the significant increase of hydrogen permeation indicated the destruction of protective layers and this effect can be used to identify critical flow intensities (critical wall shear stresses) for flow induced localized corrosion. Furthermore, these results allow better understanding of hydrogen induced failures encountered at sites of high flow intensity and/or high wall shear stresses, specifically under conditions of highly disturbed flow.

Subject
Hydrogen permeation, Iron sulfide films, Corrosion rate, Metal surfaces, Nozzles, Wall shear stress, Gas pressure, Permeation, Film formation, Jet impingement, Scale, Corrosion protection, Hydrogen
Keywords:
hydrogen permeation, flow induced corrosion, localized corrosion, hydrogen sulfide, high pressure, jet impingement, wall shear stresses
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2004
Association for Materials Protection and Performance (AMPP)
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