High-temperature corrosion of a silicon-infiltrated silicon carbide material in combustion atmospheres

High-temperature corrosion of a silicon-infiltrated alpha silicon carbide material was investigated, using an atmospheric pressure low-velocity Burner Rig to simulate gas turbine atmospheres with a range of SO3 partial pressures and sodium concentrations. Experiments were carried out at temperatures above the dew point of sodium sulphate in the range 1250 to 1350 °C. Sample weight was monitored for corrosion assessment on a 20 h cyclic …