The Devanathan-Stachurski cell is used to measure hydrogen flux through a metal. The cell consists of galvanostatic cell in which hydrogen is generated on the specimen surface, and an oxidative cell in which the hydrogen oxidation current is measured to determine the hydrogen flux. Permeation has been measured through 304L stainless steel and vanadium alloys. Electrochemical noise analysis has been completed on the potential data collected on the galvanostatic cell specimen surface. The power spectral density using the fast fourier transform and the maximum entropy method have been calculated. The signatures of the power spectral density shown indicate trends in the hydrogen uptake of the materials dependent upon the surface condition including oxide permeability and palladium coating.

Subject
Steel surfaces, Coatings, Electrochemical cells, Stainless alloys, Palladium, Vanadium, Permeation, Oxide surfaces, Bubbling, Metals, Electrochemical data, Stainless steel, Hydrogen
Keywords:
hydrogen permeation, electrochemical noise
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2006
Association for Materials Protection and Performance (AMPP)
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