Oxidation Kinetic of Nickel Base Superalloy for Seamless Wrought Rings in Aviation Industry

In the present investigation was conducted to study the oxidaction kinetics of nickel-base superalloy, Haynes C 263, used in the manufacture of rings for aircraft engines. For carrying out this study, we first conducted microstructural characterization of the pieces using the techniques of Optical Microscopy, Scanning Electronic Microscopy and X-Ray Diffraction, subsequently using the technique Thermogravimetric Analysis, the kinetic  oxidation was performed the metal in a temperature range of 600 to 900 ° C and using different atmospheres (N₂, O₂ and SO₂ + O₂).

The results of the micrographs show the formation of a protective oxide film on the surface of the material in different oxidizing agents. XRD, it was possible to determine the composition of the film and it was observed that as the reaction temperature diffraction patterns of the phases are defined, the reaction rate also increases also increases. Finally it was found that the kinetics of high temperature oxidation of the superalloy C 263, obeys the parabolic rate law.