TY - JOUR AU - Nadezhda Ishchenko AU - Ivan Petelguzov AU - Olena Slabospitska PY - 2019/04/22 Y2 - 2024/03/28 TI - Investigation of the interaction of material of fuel cladding for WWER-1000 reactor with steam at a temperature of accident overheatings JF - Materials Engineering Research JA - MER VL - 1 IS - 2 SE - Research Article DO - 10.25082/MER.2019.02.001 UR - https://www.syncsci.com/journal/MER/article/view/248 AB - The subject of this study is the oxidation of fuel rod cladding made of material Zr1Nb(0.1% O) in steam at temperatures in the range of 660°C to 1200°C with a surface in the initial state (after manufacturing - grinding) and after additional chemical etching. The changes in the microstructure of tubes due to the interaction with steam were investigated. A comparison was made between the oxidation rate of this material (weight gain) and the data on the oxidation of other alloys for nuclear power plants. The oxidation rate of Zr1Nb(0.1% O) is close to the oxidation rate of other zirconium alloys. It is shown that after chemical treatment of the surface of the samples there is a more even growth of oxide films, and they have a smaller thickness for the same time of exposure than after mechanical grinding. Surface treatment before oxidation also affects the change of microstructure of samples when heated to high temperatures. ER -