HR Abstract Iron is the most abundant metal on earth.
Steel consist mainly of iron.
Moreover, iron is a valuable catalyst and it is important for its magnetic properties. Oxidation is one of the most important processes involved in corrosion. Also in the production of modern electronic components by thin-film techniques, the importance of thin oxide films increases, due to the continuous decrease of the dimensions of the structure, down to the nanometer range. The FC-model considers the transport of ions and electrons through the oxide layer to the surface of the growing oxide. The oxidation rate increases as oxide islands grow by the dissociation of OH at island edges, and the passivation is complete as the surface becomes completely covered with iron oxide.