MODEL FOR THE DETERMINATION OF THE GROWTH DEFORMATION IN THE OXIDE SCALES

Formation of an oxide scale on high temperature alloy is a factor favo uring protection of the metal. Protective properties depend strongly o n the adherence of the oxide scale. It is well known that the process of oxidation can induce deformation. The main cause of this effect is thought to be the str-es,res that may exist in the oxide, in the subst rate and at the metal/oxide interface. A model is proposed for the str uctural transformation and rite corresponding induced deformation in a physical three-dimensional interface in the metal/oxide system. The m odel is applied to the case of the oxidation ofthe (001) Fe surface.