A synopsis of experimental results on the anodic dissolution of iron is given. From these data the existence of two different reaction mechanisms is proved, of the noncatalyzed (Bockris) mechanism and of the catalyzed (Heusler) mechanism. The current density‐potential relations under steady‐state and nonsteady‐state conditions are given. An atomistic model of the two dissolution mechanisms is confirmed by electron micrography. It is shown that a change between reaction mechanisms can be brought about at will. Which one of the two mechanisms is predominant depends on the surface activity of the iron sample, which is determined by the crystallographic substructure. This is shown by x‐ray measurements, electrochemical experiments, and electron micrographs. The exchange current densities of the
normalFe/Fe++
electrode are calculated and discussed.
Die Ergebnisse von Untersuchungen über das Gefüge und die Gitterverzerrungen an ungetemperten und bei verschiedenen Temperaturen angelassenen Ommeteisendrähten werden mit elektrochemischen Meß‐ergebnissen über die kinetischen Daten des Eisenauflösungsmechanismus verglichen.Für unterschiedliches elektrochemisches Verhalten ist die Änderung des Subgefüges verantwortlich. Es wird gezeigt, daß bei einer stark abnehmenden Subkorngrenzendichte die kinetischen Daten der Eisenauflösung vom Heusler‐Mechanismus zum Bockris‐Mechanismus übergehen.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.