Ultrahigh-temperature oxidation of Zr2Al3C4 via rapid induction heating

The oxidation behavior of Zr2Al3C4 at 1600 and 1750 °C was studied by means of induction heating. The oxidation kinetics follows a linear law and the interfacial reaction between Zr2Al3C4 and O2 is the rate-limiting step for scale growth. The microstructure of oxide scales gradually changes from intragranular (small ZrO2 particles embedded in large Al2O3 grains) to an interpenetrating dual-phase form as the exposure time increases, which is ascribed to the temperature decay of the top scale surface with scale growth.