Abstract
Optical and electron microscopy, x-ray spectrum microanalysis, and thermogravimetric analysis combined with differential scanning calorimetry are used to study the high-temperature oxidation behavior of alloy HP40NbTi of the Fe - 25Cr - 35Ni system produced by static and centrifugal casting. The kinetics of the oxidation process is described. It is shown that high-temperature oxidation of refractory alloy HP40NbTi is a complex physicochemical process, which is determined by the degree of the fineness of the structure of the alloy as well as by the temperature and the time of the exposure.
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