Effect of molybdenum disilicide additions on the oxidation behaviour of silicon carbide

Oxidation behaviour of hot-pressed silicon carbide and its composites containing 10–30 vol.% molybdenum disilicide processed with aluminium nitride and yttria additives was evaluated in the temperature range of 1300–1500 °C. The addition of molybdenum disilicide was found to improve the oxidation resistance of silicon carbide, though the overall oxidation kinetics was influenced by the sintering additives.