Interaction of austenitic stainless steels with steam in temperature range 350...1200 C

Interaction of steels 08Cr18Ni10Ti and 0Cr16Ni15Mo3Nb (EI-847) with steam at elevated temperatures from 450 to 1200 C and for comparison water corrosion at 350 C were investigated. Corrosion kinetics and oxide layer structure were studied, thicknesses of oxide layers and of unoxidized metal were measured, mechanical properties of steels after corrosion tests were determined. After tests at temperatures up to 700...800 C the exfoliating of the top oxide layers and irregular mass gain kinetics were observed, despite oxide layers grew and were preserved on samples. The possible composition of oxide layers was analyzed. The oxidized samples of steels after high-temperature tests still had strength and plasticity. The results can be of interest when examining the possibility of using steels as fuel cladding