Abstract
Laboratory corrosion test of Ni-base alloys and austenitic stainless steels was performed in 0.1/0.5% SO2-5%O2-10%H2O -15%CO2–N2at 650-750°C for 20 h. Mixture of 1.5m/o Na2SO4-1.5m/o K2SO4-1m/o Fe2O3was used as a corrosive. The effect of SO3concentration on both the onset temperature of melting and the thermal stability of the synthetic coal-ash mixture was investigated by differential scanning calorimetry. Concentration of SO2/SO3affected the corrosion of steels and alloys at 650°C and 700°C drastically.
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