Defects and Cation Diffusion in Magnetite (VII): Diffusion Controlled Formation of Magnetite During Reactions in the Iron‐Oxygen System

Abstract Parabolic rate constants describing the kinetics of the exclusively diffusion controlled growth of magnetite scales during simple reactions in the iron‐oxygen system are derived on basis of preceding studies on the defect structure and on the transport properties of this oxide. Furthermore, experimental results for the formation of magnetite by solid state reaction between the iron oxides wüstite and hematite are reported and compared with calculated data.