The Role of H2S in the Corrosion and Hydrogen Embrittlement of Steel Export

@article{citeulike:1538061, abstract = {Hydrogen permeation in a high strength ferritic steel was shown to depend on the passivity of the surface and thepresence of H2S. In the case where H2S is not present, an oxide on the surface of the steel reduced the kinetics of theproton discharge rate and, even more so, the kinetics of the molecular hydrogen evolution rate. Thus, a high percentageof hydrogen permeated the steel. After the oxide was removed, there was an increased proton discharge rate andan equally increased hydrogen evolution rate, thus resulting in very low percentage of hydrogen permeation. WhenH2S was present, the hydrogen discharge reaction remained high but the recombination reaction was suppressed sothe percent of permeation was very high. Thus, H2S plays a multiple role in increasing hydrogen permeation of passivated steel in slightly acidic environments. It increases the rates of iron corrosion and proton discharge andpoisons the hydrogen evolution reaction on the depassivated surface, thereby permitting a large fraction of hydrogenatoms to enter the metal.}, author = {Berkowitz, B. J. and Horowitz, H. H.}, citeulike-article-id = {1538061}, journal = {Journal of the Electrochemical Society}, keywords = {acidic, electrochemical, fe, hydrogen, permeation, solution, steel}, number = {3}, pages = {468--474}, posted-at = {2007-08-06 14:07:08}, priority = {2}, title = {The Role of H2S in the Corrosion and Hydrogen Embrittlement of Steel}, volume = {129}, year = {1982} }

TY - JOUR ID - citeulike:1538061 L3 - citeulike-article-id:1538061 N2 - Hydrogen permeation in a high strength ferritic steel was shown to depend on the passivity of the surface and thepresence of H2S. In the case where H2S is not present, an oxide on the surface of the steel reduced the kinetics of theproton discharge rate and, even more so, the kinetics of the molecular hydrogen evolution rate. Thus, a high percentageof hydrogen permeated the steel. After the oxide was removed, there was an increased proton discharge rate andan equally increased hydrogen evolution rate, thus resulting in very low percentage of hydrogen permeation. WhenH2S was present, the hydrogen discharge reaction remained high but the recombination reaction was suppressed sothe percent of permeation was very high. Thus, H2S plays a multiple role in increasing hydrogen permeation of passivated steel in slightly acidic environments. It increases the rates of iron corrosion and proton discharge andpoisons the hydrogen evolution reaction on the depassivated surface, thereby permitting a large fraction of hydrogenatoms to enter the metal. IS - 3 JF - Journal of the Electrochemical Society EP - 474 TI - The Role of H2S in the Corrosion and Hydrogen Embrittlement of Steel VL - 129 SP - 468 KW - acidic KW - electrochemical KW - fe KW - hydrogen KW - permeation KW - solution KW - steel AU - Berkowitz, BJ AU - Horowitz, HH PY - 1982/// ER -