Coated stainless steel 441 as interconnect material for solid oxide fuel cells: Oxidation performance and chromium evaporation
Journal article, 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
Author
Jan Gustav Grolig
Chalmers, Chemical and Biological Engineering, Environmental Inorganic Chemistry
Jan Froitzheim
Chalmers, Chemical and Biological Engineering, Environmental Inorganic Chemistry
Jan-Erik Svensson
Chalmers, Chemical and Biological Engineering, Environmental Inorganic Chemistry
Journal of Power Sources
0378-7753 (ISSN)
Vol. 248 1007-1013Subject Categories
Chemical Sciences
DOI
10.1016/j.jpowsour.2013.08.089