Oxidation and resulting mechanical properties of Ni/8Y(2)O(3)-stabilized zirconia anode substrate for solid-oxide fuel cells

Stathis, G; Simwonis, D; Tietz, F; Moropoulou, A; Naoumides, A

dc.contributor.author	Stathis, G	en
dc.contributor.author	Simwonis, D	en
dc.contributor.author	Tietz, F	en
dc.contributor.author	Moropoulou, A	en
dc.contributor.author	Naoumides, A	en
dc.date.accessioned	2014-03-01T01:18:10Z
dc.date.available	2014-03-01T01:18:10Z
dc.date.issued	2002	en
dc.identifier.issn	0884-2914	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14844
dc.subject	Mechanical Property	en
dc.subject	Solid Oxide Fuel Cell	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	TEMPERATURE OXIDATION	en
dc.subject.other	NICKEL	en
dc.title	Oxidation and resulting mechanical properties of Ni/8Y(2)O(3)-stabilized zirconia anode substrate for solid-oxide fuel cells	en
heal.type	journalArticle	en
heal.identifier.primary	10.1557/JMR.2002.0142	en
heal.identifier.secondary	http://dx.doi.org/10.1557/JMR.2002.0142	en
heal.language	English	en
heal.publicationDate	2002	en
heal.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.	en
heal.publisher	MATERIALS RESEARCH SOCIETY	en
heal.journalName	JOURNAL OF MATERIALS RESEARCH	en
dc.identifier.doi	10.1557/JMR.2002.0142	en
dc.identifier.isi	ISI:000175414600009	en
dc.identifier.volume	17	en
dc.identifier.issue	5	en
dc.identifier.spage	951	en
dc.identifier.epage	958	en