Effects of oxygen and water vapour on adhesion of scale grown on ferritic stainless steels in solid oxide fuel cells

The adhesion of thermal oxide scale grown at 800°C on ferritic stainless steel AISI 441 proposed as SOFCs interconnectors was investigated. influence oxidising atmosphere considered by 20% O 2 -N or H O-N the representative cathode and anode atmospheres, respectively. A tensile test in an SEM chamber used to assess behaviour. spallation has important candidate SOFCs. energy strain stored oxide, which calculated first scale. substrate shown range 173-214 J m -2 . oxidised water vapour higher than that oxygen. This might be due presence a silica layer scale-steel interface vapour. qualitative assessment terms initiating suggested good behaviour atmosphere.