A degradation mode of a carbon steel during thermal cycling under a simulated combustion environment

摘要: The degradation of A210C carbon steel has been investigated at 560 °C under a simulated coal-firing combustion environment. simulation was performed by direct introduction into the chamber flue gas from freeboard coal-fired fluidized-bed combustor (FBC) and meanwhile covering part samples using ash deposits collected FBC wall. It shows that oxidation is significantly increased, when covered with deposits. During thermal cycling, accelerated metal recession in presence can be interpreted proposed mode, which follows sequence scale wrinkling, buckling, finally spalling. effect on also discussed.