%0 Journal Article
%T Isothermal oxidation behavior of TribaloyTM T400 and T800
%J -
%D 2018
%R https://doi.org/10.1038/s41529-018-0060-3
%X TribaloyTM alloys are well-known as wear-resistant alloys, however, their oxidation kinetics and mechanisms are not well studied, especially their long-term oxidation behavior. In this work, the long-term isothermal oxidation behavior of TribaloyTM T400 and T800 in synthetic air at 900£¿¡ãC for up to 1000£¿h was investigated. The mass gains of the samples were continuously recorded during the experiments with a thermobalance. Post mortem inspection of the samples was performed and the oxidation mechanism was analyzed. The results show that T800 has a better oxidation resistance than T400. The parabolic rate constant kp of T800 is 4.9¡¤10£¿14£¿g2¡¤cm£¿4¡¤s£¿1, which is approximately one order of magnitude lower than 4.8¡¤10£¿13£¿g2¡¤cm£¿4¡¤s£¿1 for T400. The penetration depth of the oxides in T800 is less than half of that in T400 and steady state oxidation is attained after approximately 200£¿h, compared to 350£¿h for T400. The better oxidation resistance of T800 correlates with its higher Cr content whereby protective Cr2O3 scales form more readily
%U https://www.nature.com/articles/s41529-018-0060-3