CORROSION BEHAVIOR OF B2FE ALUMINIDE ALLOYS IN MOLTEN CARBONATES AT 650-DEGREES-C

As part of an ongoing project aiming to evaluate the suitability of al uminide overlay coatings to protect wet-seal areas of bipolar plates i n Molten Carbonate Fuel Cell (MCFC) plants, this work illustrates the preliminary results obtained in evaluating the hat corrosion resistanc e of recently-developed Fe aluminide alloys in Lilt carbonate melts un der both oxidizing and reducing MCFC gas conditions. By means of out-o f-cell tests it has been found that Fe aluminides with similar to 25 w t % Al possess long term corrosion resistance to carbonate melts expec ially in the oxidant environment.