Journal Article

PreJuSER-57166

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Oxidation and resulting mechanical properties of Ni/8YSZ anode substrate for solid oxide fuel cells

Stathis, G. ; Simwonis, D.FZJ* ; Tietz, F.FZJ* ; Moropoulou, A. ; Naoumides, A.FZJ*

2002
MRS Warrendale, Pa.

This record in other databases:    

Please use a persistent id in citations: doi:10.1557/JMR.2002.0142

Abstract: Ni/8 Mol% Y2O3-stabilized zirconia cermets are used in thin-film electrolyte solid-oxide fuel cells as support substrates. Rapid oxidation of the metallic Ni can cause failure of the substrate and of the whole system. The rate of Ni oxidation in air and in an inert atmosphere containing water vapor was determined as a function of temperature between 500 and 950 degreesC. A logarithmic rate law describes the oxidation kinetics in air, whereas a linear rate law fits the first branch of the curve of the experimental data in a humidified inert atmosphere. The substrate exhibits no significant mechanical degradation after uniform oxidation under moderate conditions. However, the observed bending of the samples after oxidation in humidified argon, due to the nonuniform oxidation, can cause damage to fuel cell.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

---

Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IWV-1)

Research Program(s):

1. Brennstoffzelle (E01)
2. SOFC - Solid Oxide Fuel Cell (SOFC-20140602) (SOFC-20140602)

Appears in the scientific report 2002

---