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The influence of Al2O3 addition on the oxidation behavior of Si-B-C ceramics at 1200°C in O2/H2O (40/60) atmosphere was studied. Results showed that Al2O3 was enriched in the oxidized layer, and impeded the crystallization of oxide (cristobalite) during cooling. Denser oxidized layer and less weigh change were observed. Infrared spectra indicated that the addition of Al2O3 could weaken the tendency...
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