Effects of Ceria Coatings on Materials Performance of 430 Steel in Coal Synthetic Gas

Ferritic steels have been recognized as candidates for their applications in integrated gasification fuel cell (IGFC) coal system. Generally, the ceria coated surfaces of 430 stainless steel exposed to oxygen at approximately 800 °C show an improved resistance to oxidation compared to the bare surfaces.  However, little is known about the effect of ceria coatings on the corrosion behavior of 430 in coal gasification products, coal synthetic gas. The corrosion behaviors of 430-stainless steel with and without ceria coating in a simulated coal syngas at 800°C were studied. The surfaces of the corroded samples were characterized by scanning electron microscopy (SEM) equipped with microchemical analytical capabilities. X-ray diffraction (XRD) analysis was also used in this research.