Hydrogen-Induced Superabundant Vacancies in Metals: Implication for Electrodeposition
The equilibrium concentration of vacancies in metals is invariably enhanced in the presence of interstitial hydrogen atoms – a phenomenon called superabundant vacancy (SAV) formation. It has been recognized that the SAV formation occurs in electrodeposition, as M-, H-atoms and M-atom vacancies are deposited by atom-by-atom process. Effects of SAV formation are described for electrodeposited Ni, Ni-Fe alloys, Fe-C alloys and Cu. Possible implication of SAV formation for corrosion in Al and steels is also briefly described.
Prof. Andreas Öchsner, Prof. Graeme E. Murch and Prof. João M.P.Q. Delgado
Y. Fukai, "Hydrogen-Induced Superabundant Vacancies in Metals: Implication for Electrodeposition", Defect and Diffusion Forum, Vols. 312-315, pp. 1106-1115, 2011