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The oxidation behavior of Zr(2)Al(3)C(4) at 1600 and 1750 degrees C was studied by means of induction heating. The oxidation kinetics follows a linear law and the interfacial reaction between Zr(2)Al(3)C(4) and O(2) is the rate-limiting step for scale growth. The microstructure of oxide scales gradually changes from intragranular (small ZrO(2) particles embedded in large Al(2)O(3) grains) to an interpenetrating dual-phase form its the exposure time increases, which is ascribed to the temperature decay of the top scale surface with scale growth. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.