Hydrostatic pressure effects on hydrogen permeation in \A514\ steel during galvanostatic hydrogen charging
By X.L. Xiong and X. Tao and Q.J. Zhou and J.X. Li and Alex A. Volinsky and Y.J. Su
Published in Corrosion Science
NULL
2016
Abstract
\A514\ offshore structural steel was exposed to hydrostatic pressure ranging from 0.1 to 40 \MPa\ to examine hydrogen permeation during galvanostatic hydrogen charging. Hydrostatic pressure decreases the energy barrier for hydrogen absorption and desorption, while increasing hydrogen adsorption. These effects are induced by both steady-state current density and the apparent diffusivity slight increase with hydrostatic pressure. Taking surface effect of hydrogen permeation into account, the intrinsic diffusivity of (3.2
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