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Abstract
Oxidation in superheated steam is frequently used to prevent corrosion of sintered steel parts. Corrosion resistance of oxidized sintered steel is affected by structural features of the oxidation products. The present study deals with the morphology and phase composition of products resulting from steam oxidation at 530–630°C. Data on the non-stoichio-metry of wüstite are given in the cases where an appreciable amount of this phase was found in the oxidation products. The results show the dependence of structural features on the conditions of steam oxidation and, in particular, on the cooling procedure after oxidation.