Abstract
The results of the short-term thermal tests of SFA samples in the temperature range 450–900 °C are presented. The dependences of the formation of the corrosion layer of the SFA material on the temperature of thermal tests are determined by various ways. It was found that with an increase in the temperature of isochronous exposure above 750 °C, a noticeable discrepancy appears between the dependencies determined by various methods, due to the occurrence of uneven (localized) corrosion.