A search for suitable coating materials on separator plates for molten carbonate fuel cells

摘要

Stainless steel separator plates in molten carbonate fuel cells need to be protected against corrosion, preferably by a coating. We select a suitable coating material by an elimination procedure. First we argue that non- oxide metalon-metal ceramic coatings are preferred. Then we select the metallic and non-metallic components for the ceramic coating. Selected non-metallic components of the most promising ceramics are B, C, N, Si and P. Metals eliminated in the elimination procedure have oxides or mixed oxides with eutectics below the MCFC operating temperature of 700 deg.C.