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Coated stainless steel 441 as interconnect material for solid oxide fuel cells: Oxidation performance and chromium evaporation

Jan Gustav Grolig (Institutionen för kemi- och bioteknik, Oorganisk miljökemi) ; Jan Froitzheim (Institutionen för kemi- och bioteknik, Oorganisk miljökemi) ; Jan-Erik Svensson (Institutionen för kemi- och bioteknik, Oorganisk miljökemi)
Journal of Power Sources (0378-7753). Vol. 248 (2014), p. 1007-1013.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: high-temperature corrosion, surface-treatment, vaporization, alloys, sofc, conductivity, resistance, additions, coatings, adhesion



Denna post skapades 2014-09-03. Senast ändrad 2014-11-03.
CPL Pubid: 202304

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Oorganisk miljökemi (2005-2014)

Ämnesområden

Kemi

Chalmers infrastruktur

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