  The Zr-based MAX phases have attracted considerable attention for their
outstanding irradiation behavior and high neutron transparency relevant to
nuclear power generation technologies. In spite of increased understanding of
physical behavior crystalline MAX phases, the high-temperature oxidation
behavior and reaction mechanism of disordered MAX phases both from theory and
experiments are not well understood due to increased system complexity. Here,
we present a detailed comparative assessment of high-temperature
thermodynamic-stability and oxidation behavior (reaction-products and chemical
activity) of ordered Ti2AlC and disordered (Ti0.5Zr0.5)2AlC. We believe that
the new insights will enhance our understanding of oxidation process in
disordered MAX phases.
