Air-side solid oxide fuel cell components

Details Air-side solid oxide fuel cell components Air-side solid oxide fuel cell components

H - Electricity

01

M

H01M 2/16 (2006.01) C22C 38/02 (2006.01) C22C 38/06 (2006.01) H01M 8/02 (2006.01) H01M 8/12 (2006.01) H01M 8/24 (2006.01)

Patent

CA 2375765

A solid oxide fuel cell component, such as a gas separator, which is adapted to be exposed to an oxidising atmosphere in the fuel cell system, and which is formed of a heat resistant alloy having a composition, in wt.%, of 5.0-10.0 Al, 0.1-3.8 Si, <= 0.5 Mn, <= 0.23 Cu, <= 0.61 Ni, <= 0.02C, <= 0.04 P, <= 0.045, < 5.0 Cr, and residue Fe. Preferably Cr <= 0.10 wt.%. In use the component has a thin, dense, adherent surface layer of Al2O3.

L'invention concerne un élément de pile à combustible à oxyde solide, notamment un séparateur de gaz, conçu pour être exposé à une atmosphère oxydante à l'intérieur du système à pile à combustible. Ledit élément de pile est constitué d'un alliage thermorésistant ayant la composition suivante, en pourcentage en poids : 5,0-10,0 Al, 0,1-3,8 Si, = 0,5 Mn, = 0,23 Cu, = 0,61 Ni, = 0,02C, = 0,04 P, = 0,045, < 5,0 Cr, le reste étant du Fe. Ainsi que, de préférence, Cr = 0,10 % en poids. Lors de son utilisation, l'élément selon l'invention comporte une couche de surface mince, dense, et adhérente de Al2O3.

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