01531nab a2200181 4500 20260522181143.0 260224s2010 xxu Turnbull, A. 27436 Local hydrogen generation and its impact on environment-assisted cracking and crevice corrosion mayo 2010 28/07/2010 ; 28/07/2010 11 p. ; 055001 Transcripción del resumen del autor. An overview is given of the key role for reduction of hydrogen ions and water in determining the local chemistry and electrochemistry in crevices and cracks. Thus, the ability to cathodically protect long, tight crevices and cracks is explained on the basis of depletion of oxygen but also on the slower kinetics for hydrogen generation consequent upon the locally elevated pH. The conditions for developing locally acidic conditions in cracks are described and used to rationalize the "chemical short crack effect" in corrosion fatigue. It is then shown how the relative magnitude of the kinetics of hydrogen generation at the crack tip and on the surface external to the crack need to be considered in testing for resistance to hydrogen-assisted cracking. The importance of internal reactions in the context of boiling water reactor crack chemistry is highlighted, and finally, ideas about constraining crevice attack by increasing the local hydrogen evolution kinetics are explored. 5 Corrosion 66 ARTICULO ddc 175434 175434 0 0 0 0 243253 BAAB BAAB 2026-03-05 200047326 0 200047326 2026-03-05 18:54:34 2026-03-05 ARTICULO