Coated stainless steel 441 as interconnect material for solid oxide fuel cells: Oxidation performance and chromium evaporation
Artikel i vetenskaplig tidskrift, 2014
Reactive Element (RE) and RE/cobalt-coated stainless steel AISI 441 was exposed at Solid Oxide Fuel Cell (SOFC) cathode conditions (850 degrees C in air with 3% water content) for up to 500 h. The chromium evaporation was measured by applying the denuder technique. Uncoated material exhibited severe spallation which could be successfully prevented by using cerium or lanthanum coatings. By applying double layer coatings of cerium or lanthanum in combination with cobalt the oxidation rate was decreased and the chromium volatilisation was also about 90% lower than the uncoated material.
additions
adhesion
high-temperature corrosion
surface-treatment
coatings
conductivity
sofc
vaporization
resistance
alloys
Författare
Jan Gustav Grolig
Chalmers, Kemi- och bioteknik, Oorganisk miljökemi
Jan Froitzheim
Chalmers, Kemi- och bioteknik, Oorganisk miljökemi
Jan-Erik Svensson
Chalmers, Kemi- och bioteknik, Oorganisk miljökemi
Journal of Power Sources
0378-7753 (ISSN)
Vol. 248 1007-1013Ämneskategorier
Kemi
DOI
10.1016/j.jpowsour.2013.08.089